#include <stdio.h>
#include <stdlib.h>
-#include <time.h>
+#include <time.h>
#include "cryptlib.h"
#include <openssl/crypto.h>
#include <openssl/buffer.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);
- if (!num_disable || CRYPTO_THREADID_cmp(&disabling_threadid, &cur)) /* 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;
- 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);
+ return (mh_mode);
}
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);
+ return(0);
}
void
CRYPTO_dbg_set_options(long bits)
{
- options = bits;
+ return;
}
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);
+ return(0);
}
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);
+ return(0);
}
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);
+ return(0);
}
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);
+ return(0);
}
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;
+ fprintf(stderr, "this is a bad idea");
+ abort();
}
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;
- }
+ fprintf(stderr, "this is a bad idea");
+ abort();
}
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;
+ fprintf(stderr, "this is a bad idea");
+ abort();
}
-
-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);
-
- (void) snprintf(bufp, BUF_REMAIN, "[%02d:%02d:%02d] ",
- lcl->tm_hour, lcl->tm_min, lcl->tm_sec);
- bufp += strlen(bufp);
- }
-
- (void) snprintf(bufp, BUF_REMAIN, "%5lu file=%s, line=%d, ",
- m->order, m->file, m->line);
- bufp += strlen(bufp);
-
- if (options & V_CRYPTO_MDEBUG_THREAD) {
- (void) snprintf(bufp, BUF_REMAIN, "thread=%lu, ",
- CRYPTO_THREADID_hash(&m->threadid));
- bufp += strlen(bufp);
- }
-
- (void) 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);
- (void) 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);
- }
- (void) 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 */
+ return;
}
#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);
+ return;
}
#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);
+ return;
}
#include <stdio.h>
#include <stdlib.h>
-#include <time.h>
+#include <time.h>
#include "cryptlib.h"
#include <openssl/crypto.h>
#include <openssl/buffer.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);
- if (!num_disable || CRYPTO_THREADID_cmp(&disabling_threadid, &cur)) /* 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;
- 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);
+ return (mh_mode);
}
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);
+ return(0);
}
void
CRYPTO_dbg_set_options(long bits)
{
- options = bits;
+ return;
}
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);
+ return(0);
}
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);
+ return(0);
}
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);
+ return(0);
}
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);
+ return(0);
}
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;
+ fprintf(stderr, "this is a bad idea");
+ abort();
}
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;
- }
+ fprintf(stderr, "this is a bad idea");
+ abort();
}
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;
+ fprintf(stderr, "this is a bad idea");
+ abort();
}
-
-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);
-
- (void) snprintf(bufp, BUF_REMAIN, "[%02d:%02d:%02d] ",
- lcl->tm_hour, lcl->tm_min, lcl->tm_sec);
- bufp += strlen(bufp);
- }
-
- (void) snprintf(bufp, BUF_REMAIN, "%5lu file=%s, line=%d, ",
- m->order, m->file, m->line);
- bufp += strlen(bufp);
-
- if (options & V_CRYPTO_MDEBUG_THREAD) {
- (void) snprintf(bufp, BUF_REMAIN, "thread=%lu, ",
- CRYPTO_THREADID_hash(&m->threadid));
- bufp += strlen(bufp);
- }
-
- (void) 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);
- (void) 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);
- }
- (void) 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 */
+ return;
}
#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);
+ return;
}
#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);
+ return;
}
projects / openbsd / commitdiff