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Diffstat (limited to 'thirdparty/openssl/crypto/mem_dbg.c')
| -rw-r--r-- | thirdparty/openssl/crypto/mem_dbg.c | 830 |
1 files changed, 830 insertions, 0 deletions
diff --git a/thirdparty/openssl/crypto/mem_dbg.c b/thirdparty/openssl/crypto/mem_dbg.c new file mode 100644 index 0000000000..8525ded78c --- /dev/null +++ b/thirdparty/openssl/crypto/mem_dbg.c @@ -0,0 +1,830 @@ +/* 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.] + */ +/* ==================================================================== + * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved. + * + * 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 above 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 acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * openssl-core@openssl.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.openssl.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED 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 OpenSSL PROJECT OR + * ITS 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. + * ==================================================================== + * + * This product includes cryptographic software written by Eric Young + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). + * + */ + +#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 */ + +DECLARE_LHASH_OF(MEM); +static LHASH_OF(MEM) *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. + */ +{ + CRYPTO_THREADID threadid; + 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 *); + +DECLARE_LHASH_OF(APP_INFO); +static LHASH_OF(APP_INFO) *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; + CRYPTO_THREADID threadid; + 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) */ + +/* + * Valid iff num_disable > 0. CRYPTO_LOCK_MALLOC2 is locked exactly in this + * case (by the thread named in disabling_thread). + */ +static CRYPTO_THREADID disabling_threadid; + +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) { + CRYPTO_THREADID cur; + CRYPTO_THREADID_current(&cur); + /* see if we don't have the MALLOC2 lock already */ + if (!num_disable + || CRYPTO_THREADID_cmp(&disabling_threadid, &cur)) { + /* + * 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; + CRYPTO_THREADID_cpy(&disabling_threadid, &cur); + } + 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_THREADID cur; + CRYPTO_THREADID_current(&cur); + CRYPTO_r_lock(CRYPTO_LOCK_MALLOC); + + ret = (mh_mode & CRYPTO_MEM_CHECK_ENABLE) + || CRYPTO_THREADID_cmp(&disabling_threadid, &cur); + + 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(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 IMPLEMENT_LHASH_COMP_FN(mem, MEM) + +static unsigned long mem_hash(const MEM *a) +{ + unsigned long ret; + + ret = (unsigned long)a->addr; + + ret = ret * 17851 + (ret >> 14) * 7 + (ret >> 4) * 251; + return (ret); +} + +static IMPLEMENT_LHASH_HASH_FN(mem, MEM) + +/* 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 CRYPTO_THREADID_cmp(&((const APP_INFO *)a_void)->threadid, + &((const APP_INFO *)b_void)->threadid); +} + +static IMPLEMENT_LHASH_COMP_FN(app_info, APP_INFO) + +static unsigned long app_info_hash(const APP_INFO *a) +{ + unsigned long ret; + + ret = CRYPTO_THREADID_hash(&a->threadid); + /* This is left in as a "who am I to question legacy?" measure */ + ret = ret * 17851 + (ret >> 14) * 7 + (ret >> 4) * 251; + return (ret); +} + +static IMPLEMENT_LHASH_HASH_FN(app_info, APP_INFO) + +static APP_INFO *pop_info(void) +{ + APP_INFO tmp; + APP_INFO *ret = NULL; + + if (amih != NULL) { + CRYPTO_THREADID_current(&tmp.threadid); + if ((ret = lh_APP_INFO_delete(amih, &tmp)) != NULL) { + APP_INFO *next = ret->next; + + if (next != NULL) { + next->references++; + (void)lh_APP_INFO_insert(amih, next); + } +#ifdef LEVITTE_DEBUG_MEM + if (CRYPTO_THREADID_cmp(&ret->threadid, &tmp.threadid)) { + fprintf(stderr, + "pop_info(): deleted info has other thread ID (%lu) than the current thread (%lu)!!!!\n", + CRYPTO_THREADID_hash(&ret->threadid), + CRYPTO_THREADID_hash(&tmp.threadid)); + 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_APP_INFO_new()) == NULL) { + OPENSSL_free(ami); + ret = 0; + goto err; + } + } + + CRYPTO_THREADID_current(&ami->threadid); + ami->file = file; + ami->line = line; + ami->info = info; + ami->references = 1; + ami->next = NULL; + + if ((amim = lh_APP_INFO_insert(amih, ami)) != NULL) { +#ifdef LEVITTE_DEBUG_MEM + if (CRYPTO_THREADID_cmp(&ami->threadid, &amim->threadid)) { + fprintf(stderr, + "CRYPTO_push_info(): previous info has other thread ID (%lu) than the current thread (%lu)!!!!\n", + CRYPTO_THREADID_hash(&amim->threadid), + CRYPTO_THREADID_hash(&ami->threadid)); + 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_MEM_new()) == 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) + CRYPTO_THREADID_current(&m->threadid); + else + memset(&m->threadid, 0, sizeof(m->threadid)); + + if (order == break_order_num) { + /* BREAK HERE */ + m->order = order; + } + m->order = order++; +#ifdef LEVITTE_DEBUG_MEM + fprintf(stderr, "LEVITTE_DEBUG_MEM: [%5ld] %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; + + CRYPTO_THREADID_current(&tmp.threadid); + m->app_info = NULL; + if (amih != NULL + && (amim = lh_APP_INFO_retrieve(amih, &tmp)) != NULL) { + m->app_info = amim; + 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: + 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 = lh_MEM_delete(mh, &m); + if (mp != NULL) { +#ifdef LEVITTE_DEBUG_MEM + fprintf(stderr, "LEVITTE_DEBUG_MEM: [%5ld] - 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 = lh_MEM_delete(mh, &m); + if (mp != NULL) { +#ifdef LEVITTE_DEBUG_MEM + fprintf(stderr, + "LEVITTE_DEBUG_MEM: [%5ld] * 0x%p (%d) -> 0x%p (%d)\n", + mp->order, mp->addr, mp->num, addr2, num); +#endif + mp->addr = addr2; + mp->num = num; + (void)lh_MEM_insert(mh, 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_doall_arg(const MEM *m, MEM_LEAK *l) +{ + char buf[1024]; + char *bufp = buf; + APP_INFO *amip; + int ami_cnt; + struct tm *lcl = NULL; + CRYPTO_THREADID 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, ", + CRYPTO_THREADID_hash(&m->threadid)); + 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; + CRYPTO_THREADID_cpy(&ti, &amip->threadid); + + 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=\"", + CRYPTO_THREADID_hash(&amip->threadid), 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 && !CRYPTO_THREADID_cmp(&amip->threadid, &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_MEM_doall_arg(mh, LHASH_DOALL_ARG_FN(print_leak), MEM_LEAK, &ml); + if (ml.chunks != 0) { + BIO_printf(b, "%ld bytes leaked in %d chunks\n", ml.bytes, ml.chunks); +#ifdef CRYPTO_MDEBUG_ABORT + abort(); +#endif + } 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 there 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_MEM_free(mh); + mh = NULL; + } + if (amih != NULL) { + if (lh_APP_INFO_num_items(amih) == 0) { + lh_APP_INFO_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 + */ + +/* + * Can't pass CRYPTO_MEM_LEAK_CB directly to lh_MEM_doall_arg because it is a + * function pointer and conversion to void * is prohibited. Instead pass its + * address + */ + +typedef CRYPTO_MEM_LEAK_CB *PCRYPTO_MEM_LEAK_CB; + +static void cb_leak_doall_arg(const MEM *m, PCRYPTO_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, PCRYPTO_MEM_LEAK_CB) + +void CRYPTO_mem_leaks_cb(CRYPTO_MEM_LEAK_CB *cb) +{ + if (mh == NULL) + return; + CRYPTO_w_lock(CRYPTO_LOCK_MALLOC2); + lh_MEM_doall_arg(mh, LHASH_DOALL_ARG_FN(cb_leak), PCRYPTO_MEM_LEAK_CB, + &cb); + CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC2); +} |