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home:Alexander_Naumov:SLE-12:Update
openssl.6982
openssl-1.0.1i-fipslocking.patch
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File openssl-1.0.1i-fipslocking.patch of Package openssl.6982
Index: openssl-1.0.1i/crypto/fips/fips_drbg_rand.c =================================================================== --- openssl-1.0.1i.orig/crypto/fips/fips_drbg_rand.c 2014-10-15 14:16:52.709471327 +0200 +++ openssl-1.0.1i/crypto/fips/fips_drbg_rand.c 2014-10-15 14:16:52.834472848 +0200 @@ -77,7 +77,8 @@ static int fips_drbg_bytes(unsigned char int rv = 0; unsigned char *adin = NULL; size_t adinlen = 0; - CRYPTO_w_lock(CRYPTO_LOCK_RAND); + int locked; + locked = private_RAND_lock(1); do { size_t rcnt; @@ -109,7 +110,8 @@ static int fips_drbg_bytes(unsigned char while (count); rv = 1; err: - CRYPTO_w_unlock(CRYPTO_LOCK_RAND); + if (locked) + private_RAND_lock(0); return rv; } @@ -124,35 +126,51 @@ static int fips_drbg_status(void) { DRBG_CTX *dctx = &ossl_dctx; int rv; - CRYPTO_r_lock(CRYPTO_LOCK_RAND); + int locked; + locked = private_RAND_lock(1); rv = dctx->status == DRBG_STATUS_READY ? 1 : 0; - CRYPTO_r_unlock(CRYPTO_LOCK_RAND); + if (locked) + private_RAND_lock(0); return rv; } static void fips_drbg_cleanup(void) { DRBG_CTX *dctx = &ossl_dctx; - CRYPTO_w_lock(CRYPTO_LOCK_RAND); + int locked; + locked = private_RAND_lock(1); FIPS_drbg_uninstantiate(dctx); - CRYPTO_w_unlock(CRYPTO_LOCK_RAND); + if (locked) + private_RAND_lock(0); } static int fips_drbg_seed(const void *seed, int seedlen) { DRBG_CTX *dctx = &ossl_dctx; + int locked; + int ret = 1; + + locked = private_RAND_lock(1); if (dctx->rand_seed_cb) - return dctx->rand_seed_cb(dctx, seed, seedlen); - return 1; + ret = dctx->rand_seed_cb(dctx, seed, seedlen); + if (locked) + private_RAND_lock(0); + return ret; } static int fips_drbg_add(const void *seed, int seedlen, double add_entropy) { DRBG_CTX *dctx = &ossl_dctx; + int locked; + int ret = 1; + + locked = private_RAND_lock(1); if (dctx->rand_add_cb) - return dctx->rand_add_cb(dctx, seed, seedlen, add_entropy); - return 1; + ret = dctx->rand_add_cb(dctx, seed, seedlen, add_entropy); + if (locked) + private_RAND_lock(0); + return ret; } static const RAND_METHOD rand_drbg_meth = Index: openssl-1.0.1i/crypto/rand/md_rand.c =================================================================== --- openssl-1.0.1i.orig/crypto/rand/md_rand.c 2014-10-15 14:16:52.715471400 +0200 +++ openssl-1.0.1i/crypto/rand/md_rand.c 2014-10-15 14:16:52.834472848 +0200 @@ -143,12 +143,6 @@ static long md_count[2]={0,0}; static double entropy=0; static int initialized=0; -static unsigned int crypto_lock_rand = 0; /* may be set only when a thread - * holds CRYPTO_LOCK_RAND - * (to prevent double locking) */ -/* access to lockin_thread is synchronized by CRYPTO_LOCK_RAND2 */ -static CRYPTO_THREADID locking_threadid; /* valid iff crypto_lock_rand is set */ - #ifdef PREDICT int rand_predictable=0; @@ -195,7 +189,7 @@ static void ssleay_rand_add(const void * long md_c[2]; unsigned char local_md[MD_DIGEST_LENGTH]; EVP_MD_CTX m; - int do_not_lock; + int locked; if (!num) return; @@ -215,19 +209,8 @@ static void ssleay_rand_add(const void * * hash function. */ - /* check if we already have the lock */ - if (crypto_lock_rand) - { - CRYPTO_THREADID cur; - CRYPTO_THREADID_current(&cur); - CRYPTO_r_lock(CRYPTO_LOCK_RAND2); - do_not_lock = !CRYPTO_THREADID_cmp(&locking_threadid, &cur); - CRYPTO_r_unlock(CRYPTO_LOCK_RAND2); - } - else - do_not_lock = 0; + locked = private_RAND_lock(1); - if (!do_not_lock) CRYPTO_w_lock(CRYPTO_LOCK_RAND); st_idx=state_index; /* use our own copies of the counters so that even @@ -259,7 +242,8 @@ static void ssleay_rand_add(const void * md_count[1] += (num / MD_DIGEST_LENGTH) + (num % MD_DIGEST_LENGTH > 0); - if (!do_not_lock) CRYPTO_w_unlock(CRYPTO_LOCK_RAND); + if (locked) + private_RAND_lock(0); EVP_MD_CTX_init(&m); for (i=0; i<num; i+=MD_DIGEST_LENGTH) @@ -310,7 +294,7 @@ static void ssleay_rand_add(const void * } EVP_MD_CTX_cleanup(&m); - if (!do_not_lock) CRYPTO_w_lock(CRYPTO_LOCK_RAND); + locked = private_RAND_lock(1); /* Don't just copy back local_md into md -- this could mean that * other thread's seeding remains without effect (except for * the incremented counter). By XORing it we keep at least as @@ -321,7 +305,8 @@ static void ssleay_rand_add(const void * } if (entropy < ENTROPY_NEEDED) /* stop counting when we have enough */ entropy += add; - if (!do_not_lock) CRYPTO_w_unlock(CRYPTO_LOCK_RAND); + if (locked) + private_RAND_lock(0); #if !defined(OPENSSL_THREADS) && !defined(OPENSSL_SYS_WIN32) assert(md_c[1] == md_count[1]); @@ -346,6 +331,7 @@ int ssleay_rand_bytes(unsigned char *buf pid_t curr_pid = getpid(); #endif int do_stir_pool = 0; + int locked; #ifdef PREDICT if (rand_predictable) @@ -383,13 +369,7 @@ int ssleay_rand_bytes(unsigned char *buf * global 'md'. */ if (lock) - CRYPTO_w_lock(CRYPTO_LOCK_RAND); - - /* prevent ssleay_rand_bytes() from trying to obtain the lock again */ - CRYPTO_w_lock(CRYPTO_LOCK_RAND2); - CRYPTO_THREADID_current(&locking_threadid); - CRYPTO_w_unlock(CRYPTO_LOCK_RAND2); - crypto_lock_rand = 1; + locked = private_RAND_lock(1); /* always poll for external entropy in FIPS mode, drbg provides the * expansion @@ -464,9 +444,8 @@ int ssleay_rand_bytes(unsigned char *buf md_count[0] += 1; /* before unlocking, we must clear 'crypto_lock_rand' */ - crypto_lock_rand = 0; - if (lock) - CRYPTO_w_unlock(CRYPTO_LOCK_RAND); + if (lock && locked) + private_RAND_lock(0); while (num > 0) { @@ -519,11 +498,11 @@ int ssleay_rand_bytes(unsigned char *buf MD_Update(&m,(unsigned char *)&(md_c[0]),sizeof(md_c)); MD_Update(&m,local_md,MD_DIGEST_LENGTH); if (lock) - CRYPTO_w_lock(CRYPTO_LOCK_RAND); + locked = private_RAND_lock(1); MD_Update(&m,md,MD_DIGEST_LENGTH); MD_Final(&m,md); - if (lock) - CRYPTO_w_unlock(CRYPTO_LOCK_RAND); + if (lock && locked) + private_RAND_lock(0); EVP_MD_CTX_cleanup(&m); if (ok) @@ -553,32 +532,10 @@ static int ssleay_rand_pseudo_bytes(unsi static int ssleay_rand_status(void) { - CRYPTO_THREADID cur; int ret; - int do_not_lock; + int locked; - CRYPTO_THREADID_current(&cur); - /* check if we already have the lock - * (could happen if a RAND_poll() implementation calls RAND_status()) */ - if (crypto_lock_rand) - { - CRYPTO_r_lock(CRYPTO_LOCK_RAND2); - do_not_lock = !CRYPTO_THREADID_cmp(&locking_threadid, &cur); - CRYPTO_r_unlock(CRYPTO_LOCK_RAND2); - } - else - do_not_lock = 0; - - if (!do_not_lock) - { - CRYPTO_w_lock(CRYPTO_LOCK_RAND); - - /* prevent ssleay_rand_bytes() from trying to obtain the lock again */ - CRYPTO_w_lock(CRYPTO_LOCK_RAND2); - CRYPTO_THREADID_cpy(&locking_threadid, &cur); - CRYPTO_w_unlock(CRYPTO_LOCK_RAND2); - crypto_lock_rand = 1; - } + locked = private_RAND_lock(1); if (!initialized) { @@ -588,13 +545,8 @@ static int ssleay_rand_status(void) ret = entropy >= ENTROPY_NEEDED; - if (!do_not_lock) - { - /* before unlocking, we must clear 'crypto_lock_rand' */ - crypto_lock_rand = 0; - - CRYPTO_w_unlock(CRYPTO_LOCK_RAND); - } + if (locked) + private_RAND_lock(0); return ret; } Index: openssl-1.0.1i/crypto/rand/rand.h =================================================================== --- openssl-1.0.1i.orig/crypto/rand/rand.h 2014-10-15 14:16:52.715471400 +0200 +++ openssl-1.0.1i/crypto/rand/rand.h 2014-10-15 14:16:52.834472848 +0200 @@ -124,6 +124,8 @@ void RAND_set_fips_drbg_type(int type, i int RAND_init_fips(void); #endif +int private_RAND_lock(int lock); + /* BEGIN ERROR CODES */ /* The following lines are auto generated by the script mkerr.pl. Any changes * made after this point may be overwritten when the script is next run. Index: openssl-1.0.1i/crypto/rand/rand_lib.c =================================================================== --- openssl-1.0.1i.orig/crypto/rand/rand_lib.c 2014-10-15 14:16:52.741471717 +0200 +++ openssl-1.0.1i/crypto/rand/rand_lib.c 2014-10-15 14:16:52.835472860 +0200 @@ -182,6 +182,41 @@ int RAND_status(void) return 0; } +int private_RAND_lock(int lock) + { + static int crypto_lock_rand; + static CRYPTO_THREADID locking_threadid; + int do_lock; + + if (!lock) + { + crypto_lock_rand = 0; + CRYPTO_w_unlock(CRYPTO_LOCK_RAND); + return 0; + } + + /* check if we already have the lock */ + if (crypto_lock_rand) + { + CRYPTO_THREADID cur; + CRYPTO_THREADID_current(&cur); + CRYPTO_r_lock(CRYPTO_LOCK_RAND2); + do_lock = !!CRYPTO_THREADID_cmp(&locking_threadid, &cur); + CRYPTO_r_unlock(CRYPTO_LOCK_RAND2); + } + else + do_lock = 1; + if (do_lock) + { + CRYPTO_w_lock(CRYPTO_LOCK_RAND); + CRYPTO_w_lock(CRYPTO_LOCK_RAND2); + CRYPTO_THREADID_current(&locking_threadid); + CRYPTO_w_unlock(CRYPTO_LOCK_RAND2); + crypto_lock_rand = 1; + } + return do_lock; + } + #ifdef OPENSSL_FIPS /* FIPS DRBG initialisation code. This sets up the DRBG for use by the @@ -242,9 +277,9 @@ static int drbg_rand_add(DRBG_CTX *ctx, RAND_SSLeay()->add(in, inlen, entropy); if (FIPS_rand_status()) { - CRYPTO_w_lock(CRYPTO_LOCK_RAND); + int locked = private_RAND_lock(1); FIPS_drbg_reseed(ctx, NULL, 0); - CRYPTO_w_unlock(CRYPTO_LOCK_RAND); + if (locked) private_RAND_lock(0); } return 1; } @@ -254,9 +289,9 @@ static int drbg_rand_seed(DRBG_CTX *ctx, RAND_SSLeay()->seed(in, inlen); if (FIPS_rand_status()) { - CRYPTO_w_lock(CRYPTO_LOCK_RAND); + int locked = private_RAND_lock(1); FIPS_drbg_reseed(ctx, NULL, 0); - CRYPTO_w_unlock(CRYPTO_LOCK_RAND); + if (locked) private_RAND_lock(0); } return 1; }
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