mirror of
https://gitlab.torproject.org/tpo/core/tor.git
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Merge branch 'bug16034_no_more_openssl_098_squashed'
Conflicts: src/test/testing_common.c
This commit is contained in:
Nick Mathewson
commit
ed02a409cf
6
changes/ticket16034
Normal file
6
changes/ticket16034
Normal file
@ -0,0 +1,6 @@
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o Removed features:
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- Tor no longer supports versions of OpenSSL before 1.0. (If you
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are on an operating system that has not upgraded to OpenSSL 1.0
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or later, and you compile Tor from source, you will need to
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install a more recent OpenSSL to link Tor against.)
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@ -32,11 +32,7 @@
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#include <openssl/evp.h>
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#include <openssl/engine.h>
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#include "crypto.h"
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#if OPENSSL_VERSION_NUMBER >= OPENSSL_V_SERIES(1,0,0)
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/* See comments about which counter mode implementation to use below. */
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#include <openssl/modes.h>
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#define CAN_USE_OPENSSL_CTR
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#endif
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#include "compat.h"
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#include "aes.h"
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#include "util.h"
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@ -189,11 +185,9 @@ struct aes_cnt_cipher {
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* we're testing it or because we have hardware acceleration configured */
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static int should_use_EVP = 0;
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#ifdef CAN_USE_OPENSSL_CTR
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/** True iff we have tested the counter-mode implementation and found that it
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* doesn't have the counter-mode bug from OpenSSL 1.0.0. */
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static int should_use_openssl_CTR = 0;
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#endif
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/** Check whether we should use the EVP interface for AES. If <b>force_val</b>
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* is nonnegative, we use use EVP iff it is true. Otherwise, we use EVP
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@ -235,7 +229,6 @@ evaluate_evp_for_aes(int force_val)
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int
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evaluate_ctr_for_aes(void)
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{
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#ifdef CAN_USE_OPENSSL_CTR
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/* Result of encrypting an all-zero block with an all-zero 128-bit AES key.
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* This should be the same as encrypting an all-zero block with an all-zero
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* 128-bit AES key in counter mode, starting at position 0 of the stream.
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@ -268,10 +261,6 @@ evaluate_ctr_for_aes(void)
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"mode; using it.");
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should_use_openssl_CTR = 1;
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}
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#else
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log_info(LD_CRYPTO, "This version of OpenSSL has a slow implementation of "
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"counter mode; not using it.");
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#endif
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return 0;
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}
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@ -356,11 +345,9 @@ aes_set_key(aes_cnt_cipher_t *cipher, const char *key, int key_bits)
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cipher->pos = 0;
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#ifdef CAN_USE_OPENSSL_CTR
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if (should_use_openssl_CTR)
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memset(cipher->buf, 0, sizeof(cipher->buf));
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else
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#endif
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aes_fill_buf_(cipher);
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}
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@ -386,7 +373,6 @@ aes_cipher_free(aes_cnt_cipher_t *cipher)
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#define UPDATE_CTR_BUF(c, n)
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#endif
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#ifdef CAN_USE_OPENSSL_CTR
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/* Helper function to use EVP with openssl's counter-mode wrapper. */
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static void
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evp_block128_fn(const uint8_t in[16],
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@ -397,7 +383,6 @@ evp_block128_fn(const uint8_t in[16],
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int inl=16, outl=16;
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EVP_EncryptUpdate(ctx, out, &outl, in, inl);
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}
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#endif
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/** Encrypt <b>len</b> bytes from <b>input</b>, storing the result in
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* <b>output</b>. Uses the key in <b>cipher</b>, and advances the counter
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@ -407,7 +392,6 @@ void
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aes_crypt(aes_cnt_cipher_t *cipher, const char *input, size_t len,
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char *output)
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{
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#ifdef CAN_USE_OPENSSL_CTR
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if (should_use_openssl_CTR) {
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if (cipher->using_evp) {
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/* In openssl 1.0.0, there's an if'd out EVP_aes_128_ctr in evp.h. If
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@ -431,9 +415,7 @@ aes_crypt(aes_cnt_cipher_t *cipher, const char *input, size_t len,
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&cipher->pos);
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}
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return;
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} else
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#endif
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{
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} else {
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int c = cipher->pos;
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if (PREDICT_UNLIKELY(!len)) return;
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@ -466,13 +448,10 @@ aes_crypt(aes_cnt_cipher_t *cipher, const char *input, size_t len,
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void
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aes_crypt_inplace(aes_cnt_cipher_t *cipher, char *data, size_t len)
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{
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#ifdef CAN_USE_OPENSSL_CTR
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if (should_use_openssl_CTR) {
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aes_crypt(cipher, data, len, data);
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return;
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} else
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#endif
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{
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} else {
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int c = cipher->pos;
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if (PREDICT_UNLIKELY(!len)) return;
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@ -512,11 +491,8 @@ aes_set_iv(aes_cnt_cipher_t *cipher, const char *iv)
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cipher->pos = 0;
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memcpy(cipher->ctr_buf.buf, iv, 16);
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#ifdef CAN_USE_OPENSSL_CTR
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if (!should_use_openssl_CTR)
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#endif
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aes_fill_buf_(cipher);
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}
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#endif
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@ -58,8 +58,8 @@
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#include "compat.h"
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#include "sandbox.h"
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#if OPENSSL_VERSION_NUMBER < OPENSSL_V_SERIES(0,9,8)
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#error "We require OpenSSL >= 0.9.8"
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#if OPENSSL_VERSION_NUMBER < OPENSSL_V_SERIES(1,0,0)
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#error "We require OpenSSL >= 1.0.0"
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#endif
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#ifdef ANDROID
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@ -300,16 +300,9 @@ crypto_early_init(void)
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SSLeay(), SSLeay_version(SSLEAY_VERSION));
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}
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if (SSLeay() < OPENSSL_V_SERIES(1,0,0)) {
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log_notice(LD_CRYPTO,
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"Your OpenSSL version seems to be %s. We recommend 1.0.0 "
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"or later.",
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crypto_openssl_get_version_str());
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}
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crypto_force_rand_ssleay();
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if (crypto_seed_rng(1) < 0)
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if (crypto_seed_rng() < 0)
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return -1;
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if (crypto_init_siphash_key() < 0)
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return -1;
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@ -391,7 +384,7 @@ crypto_global_init(int useAccel, const char *accelName, const char *accelDir)
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}
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if (crypto_force_rand_ssleay()) {
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if (crypto_seed_rng(1) < 0)
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if (crypto_seed_rng() < 0)
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return -1;
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}
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@ -405,7 +398,11 @@ crypto_global_init(int useAccel, const char *accelName, const char *accelDir)
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void
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crypto_thread_cleanup(void)
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{
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#if OPENSSL_VERSION_NUMBER >= OPENSSL_V_SERIES(1,1,0)
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ERR_remove_thread_state(NULL);
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#else
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ERR_remove_state(0);
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#endif
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}
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/** used by tortls.c: wrap an RSA* in a crypto_pk_t. */
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@ -2246,15 +2243,6 @@ crypto_dh_free(crypto_dh_t *dh)
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* work for us too. */
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#define ADD_ENTROPY 32
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/** True iff it's safe to use RAND_poll after setup.
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*
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* Versions of OpenSSL prior to 0.9.7k and 0.9.8c had a bug where RAND_poll
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* would allocate an fd_set on the stack, open a new file, and try to FD_SET
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* that fd without checking whether it fit in the fd_set. Thus, if the
|
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* system has not just been started up, it is unsafe to call */
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#define RAND_POLL_IS_SAFE \
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(OPENSSL_VERSION_NUMBER >= OPENSSL_V(0,9,8,'c'))
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/** Set the seed of the weak RNG to a random value. */
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void
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crypto_seed_weak_rng(tor_weak_rng_t *rng)
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@ -2324,7 +2312,7 @@ crypto_strongest_rand(uint8_t *out, size_t out_len)
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* have not yet allocated a bunch of fds. Return 0 on success, -1 on failure.
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*/
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int
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crypto_seed_rng(int startup)
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crypto_seed_rng(void)
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{
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int rand_poll_ok = 0, load_entropy_ok = 0;
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uint8_t buf[ADD_ENTROPY];
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@ -2332,11 +2320,9 @@ crypto_seed_rng(int startup)
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/* OpenSSL has a RAND_poll function that knows about more kinds of
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* entropy than we do. We'll try calling that, *and* calling our own entropy
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* functions. If one succeeds, we'll accept the RNG as seeded. */
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if (startup || RAND_POLL_IS_SAFE) {
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rand_poll_ok = RAND_poll();
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if (rand_poll_ok == 0)
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log_warn(LD_CRYPTO, "RAND_poll() failed.");
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}
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rand_poll_ok = RAND_poll();
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if (rand_poll_ok == 0)
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log_warn(LD_CRYPTO, "RAND_poll() failed.");
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load_entropy_ok = !crypto_strongest_rand(buf, sizeof(buf));
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if (load_entropy_ok) {
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@ -3058,13 +3044,11 @@ openssl_dynlock_destroy_cb_(struct CRYPTO_dynlock_value *v,
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tor_free(v);
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}
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#if OPENSSL_VERSION_NUMBER >= OPENSSL_V_SERIES(1,0,0)
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static void
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tor_set_openssl_thread_id(CRYPTO_THREADID *threadid)
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{
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CRYPTO_THREADID_set_numeric(threadid, tor_get_thread_id());
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}
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#endif
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/** @{ */
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/** Helper: Construct mutexes, and set callbacks to help OpenSSL handle being
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@ -3079,11 +3063,7 @@ setup_openssl_threading(void)
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for (i=0; i < n; ++i)
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openssl_mutexes_[i] = tor_mutex_new();
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CRYPTO_set_locking_callback(openssl_locking_cb_);
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#if OPENSSL_VERSION_NUMBER < OPENSSL_V_SERIES(1,0,0)
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CRYPTO_set_id_callback(tor_get_thread_id);
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#else
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CRYPTO_THREADID_set_callback(tor_set_openssl_thread_id);
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#endif
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CRYPTO_set_dynlock_create_callback(openssl_dynlock_create_cb_);
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CRYPTO_set_dynlock_lock_callback(openssl_dynlock_lock_cb_);
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CRYPTO_set_dynlock_destroy_callback(openssl_dynlock_destroy_cb_);
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@ -3096,7 +3076,11 @@ int
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crypto_global_cleanup(void)
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{
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EVP_cleanup();
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#if OPENSSL_VERSION_NUMBER >= OPENSSL_V_SERIES(1,1,0)
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ERR_remove_thread_state(NULL);
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#else
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ERR_remove_state(0);
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#endif
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ERR_free_strings();
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|
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if (dh_param_p)
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@ -253,7 +253,7 @@ int crypto_expand_key_material_rfc5869_sha256(
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uint8_t *key_out, size_t key_out_len);
|
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|
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/* random numbers */
|
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int crypto_seed_rng(int startup);
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int crypto_seed_rng(void);
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MOCK_DECL(int,crypto_rand,(char *to, size_t n));
|
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int crypto_strongest_rand(uint8_t *out, size_t out_len);
|
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int crypto_rand_int(unsigned int max);
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|
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@ -75,8 +75,8 @@
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#include "container.h"
|
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#include <string.h>
|
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|
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#if OPENSSL_VERSION_NUMBER < OPENSSL_V_SERIES(0,9,8)
|
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#error "We require OpenSSL >= 0.9.8"
|
||||
#if OPENSSL_VERSION_NUMBER < OPENSSL_V_SERIES(1,0,0)
|
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#error "We require OpenSSL >= 1.0.0"
|
||||
#endif
|
||||
|
||||
/* Enable the "v2" TLS handshake.
|
||||
@ -93,10 +93,8 @@
|
||||
|
||||
#define ADDR(tls) (((tls) && (tls)->address) ? tls->address : "peer")
|
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|
||||
#if (OPENSSL_VERSION_NUMBER < OPENSSL_V(0,9,8,'s') || \
|
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(OPENSSL_VERSION_NUMBER >= OPENSSL_V_SERIES(0,9,9) && \
|
||||
OPENSSL_VERSION_NUMBER < OPENSSL_V(1,0,0,'f')))
|
||||
/* This is a version of OpenSSL before 0.9.8s/1.0.0f. It does not have
|
||||
#if OPENSSL_VERSION_NUMBER < OPENSSL_V(1,0,0,'f')
|
||||
/* This is a version of OpenSSL before 1.0.0f. It does not have
|
||||
* the CVE-2011-4576 fix, and as such it can't use RELEASE_BUFFERS and
|
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* SSL3 safely at the same time.
|
||||
*/
|
||||
@ -114,13 +112,6 @@
|
||||
#define SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION 0x0010
|
||||
#endif
|
||||
|
||||
/** Does the run-time openssl version look like we need
|
||||
* SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION? */
|
||||
static int use_unsafe_renegotiation_op = 0;
|
||||
/** Does the run-time openssl version look like we need
|
||||
* SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION? */
|
||||
static int use_unsafe_renegotiation_flag = 0;
|
||||
|
||||
/** Structure that we use for a single certificate. */
|
||||
struct tor_cert_t {
|
||||
X509 *cert;
|
||||
@ -485,56 +476,6 @@ tor_tls_init(void)
|
||||
|
||||
version = SSLeay();
|
||||
|
||||
/* OpenSSL 0.9.8l introduced SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
|
||||
* here, but without thinking too hard about it: it turns out that the
|
||||
* flag in question needed to be set at the last minute, and that it
|
||||
* conflicted with an existing flag number that had already been added
|
||||
* in the OpenSSL 1.0.0 betas. OpenSSL 0.9.8m thoughtfully replaced
|
||||
* the flag with an option and (it seems) broke anything that used
|
||||
* SSL3_FLAGS_* for the purpose. So we need to know how to do both,
|
||||
* and we mustn't use the SSL3_FLAGS option with anything besides
|
||||
* OpenSSL 0.9.8l.
|
||||
*
|
||||
* No, we can't just set flag 0x0010 everywhere. It breaks Tor with
|
||||
* OpenSSL 1.0.0beta3 and later. On the other hand, we might be able to
|
||||
* set option 0x00040000L everywhere.
|
||||
*
|
||||
* No, we can't simply detect whether the flag or the option is present
|
||||
* in the headers at build-time: some vendors (notably Apple) like to
|
||||
* leave their headers out of sync with their libraries.
|
||||
*
|
||||
* Yes, it _is_ almost as if the OpenSSL developers decided that no
|
||||
* program should be allowed to use renegotiation unless it first passed
|
||||
* a test of intelligence and determination.
|
||||
*/
|
||||
if (version > OPENSSL_V(0,9,8,'k') && version <= OPENSSL_V(0,9,8,'l')) {
|
||||
log_info(LD_GENERAL, "OpenSSL %s looks like version 0.9.8l, but "
|
||||
"some vendors have backported renegotiation code from "
|
||||
"0.9.8m without updating the version number. "
|
||||
"I will try SSL3_FLAGS and SSL_OP to enable renegotation.",
|
||||
SSLeay_version(SSLEAY_VERSION));
|
||||
use_unsafe_renegotiation_flag = 1;
|
||||
use_unsafe_renegotiation_op = 1;
|
||||
} else if (version > OPENSSL_V(0,9,8,'l')) {
|
||||
log_info(LD_GENERAL, "OpenSSL %s looks like version 0.9.8m or later; "
|
||||
"I will try SSL_OP to enable renegotiation",
|
||||
SSLeay_version(SSLEAY_VERSION));
|
||||
use_unsafe_renegotiation_op = 1;
|
||||
} else if (version <= OPENSSL_V(0,9,8,'k')) {
|
||||
log_info(LD_GENERAL, "OpenSSL %s [%lx] looks like it's older than "
|
||||
"0.9.8l, but some vendors have backported 0.9.8l's "
|
||||
"renegotiation code to earlier versions, and some have "
|
||||
"backported the code from 0.9.8m or 0.9.8n. I'll set both "
|
||||
"SSL3_FLAGS and SSL_OP just to be safe.",
|
||||
SSLeay_version(SSLEAY_VERSION), version);
|
||||
use_unsafe_renegotiation_flag = 1;
|
||||
use_unsafe_renegotiation_op = 1;
|
||||
} else {
|
||||
/* this is dead code, yes? */
|
||||
log_info(LD_GENERAL, "OpenSSL %s has version %lx",
|
||||
SSLeay_version(SSLEAY_VERSION), version);
|
||||
}
|
||||
|
||||
#if (SIZEOF_VOID_P >= 8 && \
|
||||
!defined(OPENSSL_NO_EC) && \
|
||||
OPENSSL_VERSION_NUMBER >= OPENSSL_V_SERIES(1,0,1))
|
||||
@ -1327,24 +1268,6 @@ tor_tls_context_new(crypto_pk_t *identity, unsigned int key_lifetime,
|
||||
}
|
||||
#endif
|
||||
|
||||
/* XXX This block is now obsolete. */
|
||||
if (
|
||||
#ifdef DISABLE_SSL3_HANDSHAKE
|
||||
1 ||
|
||||
#endif
|
||||
SSLeay() < OPENSSL_V(0,9,8,'s') ||
|
||||
(SSLeay() >= OPENSSL_V_SERIES(0,9,9) &&
|
||||
SSLeay() < OPENSSL_V(1,0,0,'f'))) {
|
||||
/* And not SSL3 if it's subject to CVE-2011-4576. */
|
||||
log_info(LD_NET, "Disabling SSLv3 because this OpenSSL version "
|
||||
"might otherwise be vulnerable to CVE-2011-4576 "
|
||||
"(compile-time version %08lx (%s); "
|
||||
"runtime version %08lx (%s))",
|
||||
(unsigned long)OPENSSL_VERSION_NUMBER, OPENSSL_VERSION_TEXT,
|
||||
(unsigned long)SSLeay(), SSLeay_version(SSLEAY_VERSION));
|
||||
SSL_CTX_set_options(result->ctx, SSL_OP_NO_SSLv3);
|
||||
}
|
||||
|
||||
SSL_CTX_set_options(result->ctx, SSL_OP_SINGLE_DH_USE);
|
||||
SSL_CTX_set_options(result->ctx, SSL_OP_SINGLE_ECDH_USE);
|
||||
|
||||
@ -1355,16 +1278,21 @@ tor_tls_context_new(crypto_pk_t *identity, unsigned int key_lifetime,
|
||||
/* Yes, we know what we are doing here. No, we do not treat a renegotiation
|
||||
* as authenticating any earlier-received data.
|
||||
*/
|
||||
if (use_unsafe_renegotiation_op) {
|
||||
{
|
||||
SSL_CTX_set_options(result->ctx,
|
||||
SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION);
|
||||
}
|
||||
#ifdef SSL_OP_NO_COMPRESSION
|
||||
SSL_CTX_set_options(result->ctx, SSL_OP_NO_COMPRESSION);
|
||||
#endif
|
||||
#if OPENSSL_VERSION_NUMBER < OPENSSL_V_SERIES(1,1,0)
|
||||
#ifndef OPENSSL_NO_COMP
|
||||
/* Don't actually allow compression; it uses ram and time, but the data
|
||||
* we transmit is all encrypted anyway. */
|
||||
if (result->ctx->comp_methods)
|
||||
result->ctx->comp_methods = NULL;
|
||||
#endif
|
||||
#endif
|
||||
#ifdef SSL_MODE_RELEASE_BUFFERS
|
||||
SSL_CTX_set_mode(result->ctx, SSL_MODE_RELEASE_BUFFERS);
|
||||
#endif
|
||||
@ -1399,8 +1327,7 @@ tor_tls_context_new(crypto_pk_t *identity, unsigned int key_lifetime,
|
||||
SSL_CTX_set_tmp_dh(result->ctx, crypto_dh_get_dh_(dh));
|
||||
crypto_dh_free(dh);
|
||||
}
|
||||
#if (!defined(OPENSSL_NO_EC) && \
|
||||
OPENSSL_VERSION_NUMBER >= OPENSSL_V_SERIES(1,0,0))
|
||||
#if !defined(OPENSSL_NO_EC)
|
||||
if (! is_client) {
|
||||
int nid;
|
||||
EC_KEY *ec_key;
|
||||
@ -1512,10 +1439,23 @@ static int v2_cipher_list_pruned = 0;
|
||||
/** Return 0 if <b>m</b> does not support the cipher with ID <b>cipher</b>;
|
||||
* return 1 if it does support it, or if we have no way to tell. */
|
||||
static int
|
||||
find_cipher_by_id(const SSL_METHOD *m, uint16_t cipher)
|
||||
find_cipher_by_id(const SSL *ssl, const SSL_METHOD *m, uint16_t cipher)
|
||||
{
|
||||
const SSL_CIPHER *c;
|
||||
#ifdef HAVE_STRUCT_SSL_METHOD_ST_GET_CIPHER_BY_CHAR
|
||||
#if OPENSSL_VERSION_NUMBER >= OPENSSL_V_SERIES(1,0,2)
|
||||
{
|
||||
unsigned char cipherid[3];
|
||||
tor_assert(ssl);
|
||||
set_uint16(cipherid, htons(cipher));
|
||||
cipherid[2] = 0; /* If ssl23_get_cipher_by_char finds no cipher starting
|
||||
* with a two-byte 'cipherid', it may look for a v2
|
||||
* cipher with the appropriate 3 bytes. */
|
||||
c = SSL_CIPHER_find((SSL*)ssl, cipherid);
|
||||
if (c)
|
||||
tor_assert((c->id & 0xffff) == cipher);
|
||||
return c != NULL;
|
||||
}
|
||||
#elif defined(HAVE_STRUCT_SSL_METHOD_ST_GET_CIPHER_BY_CHAR)
|
||||
if (m && m->get_cipher_by_char) {
|
||||
unsigned char cipherid[3];
|
||||
set_uint16(cipherid, htons(cipher));
|
||||
@ -1528,6 +1468,7 @@ find_cipher_by_id(const SSL_METHOD *m, uint16_t cipher)
|
||||
return c != NULL;
|
||||
} else
|
||||
#endif
|
||||
#if OPENSSL_VERSION_NUMBER < OPENSSL_V_SERIES(1,1,0)
|
||||
if (m && m->get_cipher && m->num_ciphers) {
|
||||
/* It would seem that some of the "let's-clean-up-openssl" forks have
|
||||
* removed the get_cipher_by_char function. Okay, so now you get a
|
||||
@ -1541,23 +1482,24 @@ find_cipher_by_id(const SSL_METHOD *m, uint16_t cipher)
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
} else {
|
||||
return 1; /* No way to search */
|
||||
}
|
||||
#endif
|
||||
(void) ssl;
|
||||
return 1; /* No way to search */
|
||||
}
|
||||
|
||||
/** Remove from v2_cipher_list every cipher that we don't support, so that
|
||||
* comparing v2_cipher_list to a client's cipher list will give a sensible
|
||||
* result. */
|
||||
static void
|
||||
prune_v2_cipher_list(void)
|
||||
prune_v2_cipher_list(const SSL *ssl)
|
||||
{
|
||||
uint16_t *inp, *outp;
|
||||
const SSL_METHOD *m = SSLv23_method();
|
||||
|
||||
inp = outp = v2_cipher_list;
|
||||
while (*inp) {
|
||||
if (find_cipher_by_id(m, *inp)) {
|
||||
if (find_cipher_by_id(ssl, m, *inp)) {
|
||||
*outp++ = *inp++;
|
||||
} else {
|
||||
inp++;
|
||||
@ -1579,7 +1521,7 @@ tor_tls_classify_client_ciphers(const SSL *ssl,
|
||||
int i, res;
|
||||
tor_tls_t *tor_tls;
|
||||
if (PREDICT_UNLIKELY(!v2_cipher_list_pruned))
|
||||
prune_v2_cipher_list();
|
||||
prune_v2_cipher_list(ssl);
|
||||
|
||||
tor_tls = tor_tls_get_by_ssl(ssl);
|
||||
if (tor_tls && tor_tls->client_cipher_list_type)
|
||||
@ -1613,7 +1555,7 @@ tor_tls_classify_client_ciphers(const SSL *ssl,
|
||||
const uint16_t *v2_cipher = v2_cipher_list;
|
||||
for (i = 0; i < sk_SSL_CIPHER_num(peer_ciphers); ++i) {
|
||||
SSL_CIPHER *cipher = sk_SSL_CIPHER_value(peer_ciphers, i);
|
||||
uint16_t id = cipher->id & 0xffff;
|
||||
uint16_t id = SSL_CIPHER_get_id(cipher) & 0xffff;
|
||||
if (id == 0x00ff) /* extended renegotiation indicator. */
|
||||
continue;
|
||||
if (!id || id != *v2_cipher) {
|
||||
@ -1657,13 +1599,39 @@ tor_tls_classify_client_ciphers(const SSL *ssl,
|
||||
static int
|
||||
tor_tls_client_is_using_v2_ciphers(const SSL *ssl)
|
||||
{
|
||||
SSL_SESSION *session;
|
||||
if (!(session = SSL_get_session((SSL *)ssl))) {
|
||||
log_info(LD_NET, "No session on TLS?");
|
||||
return CIPHERS_ERR;
|
||||
}
|
||||
STACK_OF(SSL_CIPHER) *ciphers = SSL_get_ciphers(ssl);
|
||||
|
||||
return tor_tls_classify_client_ciphers(ssl, session->ciphers) >= CIPHERS_V2;
|
||||
#if OPENSSL_VERSION_NUMBER < OPENSSL_V_SERIES(1,1,0)
|
||||
{
|
||||
SSL_SESSION *session;
|
||||
STACK_OF(SSL_CIPHER) *c1;
|
||||
int i;
|
||||
if (!(session = SSL_get_session((SSL *)ssl))) {
|
||||
log_info(LD_NET, "No session on TLS?");
|
||||
return CIPHERS_ERR;
|
||||
}
|
||||
c1 = session->ciphers;
|
||||
|
||||
if (sk_SSL_CIPHER_num(c1) != sk_SSL_CIPHER_num(ciphers)) {
|
||||
log_warn(LD_BUG, "Whoops. session->ciphers doesn't "
|
||||
"match SSL_get_ciphers()");
|
||||
return 0;
|
||||
}
|
||||
for (i = 0; i < sk_SSL_CIPHER_num(c1); ++i) {
|
||||
SSL_CIPHER *a = sk_SSL_CIPHER_value(ciphers, i);
|
||||
SSL_CIPHER *b = sk_SSL_CIPHER_value(c1, i);
|
||||
unsigned long a_id = SSL_CIPHER_get_id(a);
|
||||
unsigned long b_id = SSL_CIPHER_get_id(b);
|
||||
if (a_id != b_id) {
|
||||
log_warn(LD_BUG, "Cipher mismatch between session->ciphers and "
|
||||
"SSL_get_ciphers() at %d: %lx vs %lx", i,
|
||||
a_id, b_id);
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
return tor_tls_classify_client_ciphers(ssl, ciphers) >= CIPHERS_V2;
|
||||
}
|
||||
|
||||
/** Invoked when we're accepting a connection on <b>ssl</b>, and the connection
|
||||
@ -1676,14 +1644,17 @@ static void
|
||||
tor_tls_server_info_callback(const SSL *ssl, int type, int val)
|
||||
{
|
||||
tor_tls_t *tls;
|
||||
int ssl_state;
|
||||
(void) val;
|
||||
|
||||
tor_tls_debug_state_callback(ssl, type, val);
|
||||
|
||||
if (type != SSL_CB_ACCEPT_LOOP)
|
||||
return;
|
||||
if ((ssl->state != SSL3_ST_SW_SRVR_HELLO_A) &&
|
||||
(ssl->state != SSL3_ST_SW_SRVR_HELLO_B))
|
||||
|
||||
ssl_state = SSL_state(ssl);
|
||||
if ((ssl_state != SSL3_ST_SW_SRVR_HELLO_A) &&
|
||||
(ssl_state != SSL3_ST_SW_SRVR_HELLO_B))
|
||||
return;
|
||||
|
||||
tls = tor_tls_get_by_ssl(ssl);
|
||||
@ -1714,10 +1685,6 @@ tor_tls_server_info_callback(const SSL *ssl, int type, int val)
|
||||
|
||||
if (tls) {
|
||||
tls->wasV2Handshake = 1;
|
||||
#ifdef USE_BUFFEREVENTS
|
||||
if (use_unsafe_renegotiation_flag)
|
||||
tls->ssl->s3->flags |= SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION;
|
||||
#endif
|
||||
} else {
|
||||
log_warn(LD_BUG, "Couldn't look up the tls for an SSL*. How odd!");
|
||||
}
|
||||
@ -1725,7 +1692,6 @@ tor_tls_server_info_callback(const SSL *ssl, int type, int val)
|
||||
}
|
||||
#endif
|
||||
|
||||
#if OPENSSL_VERSION_NUMBER >= OPENSSL_V_SERIES(1,0,0)
|
||||
/** Callback to get invoked on a server after we've read the list of ciphers
|
||||
* the client supports, but before we pick our own ciphersuite.
|
||||
*
|
||||
@ -1763,9 +1729,6 @@ tor_tls_setup_session_secret_cb(tor_tls_t *tls)
|
||||
{
|
||||
SSL_set_session_secret_cb(tls->ssl, tor_tls_session_secret_cb, NULL);
|
||||
}
|
||||
#else
|
||||
#define tor_tls_setup_session_secret_cb(tls) STMT_NIL
|
||||
#endif
|
||||
|
||||
/** Explain which ciphers we're missing. */
|
||||
static void
|
||||
@ -1791,21 +1754,46 @@ log_unsupported_ciphers(smartlist_t *unsupported)
|
||||
tor_free(joined);
|
||||
}
|
||||
|
||||
/** Replace *<b>ciphers</b> with a new list of SSL ciphersuites: specifically,
|
||||
* a list designed to mimic a common web browser. We might not be able to do
|
||||
* that if OpenSSL doesn't support all the ciphers we want. Some of the
|
||||
* ciphers in the list won't actually be implemented by OpenSSL: that's okay
|
||||
* so long as the server doesn't select them.
|
||||
static void
|
||||
set_ssl_ciphers_to_list(SSL *ssl, STACK_OF(SSL_CIPHER) *stack)
|
||||
{
|
||||
STACK_OF(SSL_CIPHER) *ciphers;
|
||||
|
||||
int r, i;
|
||||
/* #1: ensure that the ssl object has its own list of ciphers. Otherwise we
|
||||
* might be about to stomp the SSL_CTX ciphers list. */
|
||||
r = SSL_set_cipher_list(ssl, "HIGH");
|
||||
tor_assert(r);
|
||||
|
||||
/* #2: Grab ssl_ciphers and clear it. */
|
||||
ciphers = SSL_get_ciphers(ssl);
|
||||
tor_assert(ciphers);
|
||||
sk_SSL_CIPHER_zero(ciphers);
|
||||
|
||||
/* #3: Copy the elements from stack. */
|
||||
for (i = 0; i < sk_SSL_CIPHER_num(stack); ++i) {
|
||||
SSL_CIPHER *c = sk_SSL_CIPHER_value(stack, i);
|
||||
sk_SSL_CIPHER_push(ciphers, c);
|
||||
}
|
||||
}
|
||||
|
||||
/** Replace the ciphers on <b>ssl</b> with a new list of SSL ciphersuites:
|
||||
* specifically, a list designed to mimic a common web browser. We might not
|
||||
* be able to do that if OpenSSL doesn't support all the ciphers we want.
|
||||
* Some of the ciphers in the list won't actually be implemented by OpenSSL:
|
||||
* that's okay so long as the server doesn't select them.
|
||||
*
|
||||
* [If the server <b>does</b> select a bogus cipher, we won't crash or
|
||||
* anything; we'll just fail later when we try to look up the cipher in
|
||||
* ssl->cipher_list_by_id.]
|
||||
*/
|
||||
static void
|
||||
rectify_client_ciphers(STACK_OF(SSL_CIPHER) **ciphers)
|
||||
rectify_client_ciphers(SSL *ssl)
|
||||
{
|
||||
#ifdef V2_HANDSHAKE_CLIENT
|
||||
if (PREDICT_UNLIKELY(!CLIENT_CIPHER_STACK)) {
|
||||
STACK_OF(SSL_CIPHER) *ciphers = SSL_get_ciphers(ssl);
|
||||
|
||||
/* We need to set CLIENT_CIPHER_STACK to an array of the ciphers
|
||||
* we want to use/advertise. */
|
||||
int i = 0, j = 0;
|
||||
@ -1826,32 +1814,33 @@ rectify_client_ciphers(STACK_OF(SSL_CIPHER) **ciphers)
|
||||
tor_assert(CLIENT_CIPHER_STACK);
|
||||
|
||||
log_debug(LD_NET, "List was: %s", CLIENT_CIPHER_LIST);
|
||||
for (j = 0; j < sk_SSL_CIPHER_num(*ciphers); ++j) {
|
||||
SSL_CIPHER *cipher = sk_SSL_CIPHER_value(*ciphers, j);
|
||||
log_debug(LD_NET, "Cipher %d: %lx %s", j, cipher->id, cipher->name);
|
||||
for (j = 0; j < sk_SSL_CIPHER_num(ciphers); ++j) {
|
||||
SSL_CIPHER *cipher = sk_SSL_CIPHER_value(ciphers, j);
|
||||
log_debug(LD_NET, "Cipher %d: %lx %s", j,
|
||||
SSL_CIPHER_get_id(cipher), SSL_CIPHER_get_name(cipher));
|
||||
}
|
||||
|
||||
/* Then copy as many ciphers as we can from the good list, inserting
|
||||
* dummies as needed. Let j be an index into list of ciphers we have
|
||||
* (*ciphers) and let i be an index into the ciphers we want
|
||||
* (ciphers) and let i be an index into the ciphers we want
|
||||
* (CLIENT_INFO_CIPHER_LIST). We are building a list of ciphers in
|
||||
* CLIENT_CIPHER_STACK.
|
||||
*/
|
||||
for (i = j = 0; i < N_CLIENT_CIPHERS; ) {
|
||||
SSL_CIPHER *cipher = NULL;
|
||||
if (j < sk_SSL_CIPHER_num(*ciphers))
|
||||
cipher = sk_SSL_CIPHER_value(*ciphers, j);
|
||||
if (cipher && ((cipher->id >> 24) & 0xff) != 3) {
|
||||
if (j < sk_SSL_CIPHER_num(ciphers))
|
||||
cipher = sk_SSL_CIPHER_value(ciphers, j);
|
||||
if (cipher && ((SSL_CIPHER_get_id(cipher) >> 24) & 0xff) != 3) {
|
||||
/* Skip over non-v3 ciphers entirely. (This should no longer be
|
||||
* needed, thanks to saying !SSLv2 above.) */
|
||||
log_debug(LD_NET, "Skipping v%d cipher %s",
|
||||
(int)((cipher->id>>24) & 0xff),
|
||||
cipher->name);
|
||||
(int)((SSL_CIPHER_get_id(cipher)>>24) & 0xff),
|
||||
SSL_CIPHER_get_name(cipher));
|
||||
++j;
|
||||
} else if (cipher &&
|
||||
(cipher->id & 0xffff) == CLIENT_CIPHER_INFO_LIST[i].id) {
|
||||
(SSL_CIPHER_get_id(cipher) & 0xffff) == CLIENT_CIPHER_INFO_LIST[i].id) {
|
||||
/* "cipher" is the cipher we expect. Put it on the list. */
|
||||
log_debug(LD_NET, "Found cipher %s", cipher->name);
|
||||
log_debug(LD_NET, "Found cipher %s", SSL_CIPHER_get_name(cipher));
|
||||
sk_SSL_CIPHER_push(CLIENT_CIPHER_STACK, cipher);
|
||||
++j;
|
||||
++i;
|
||||
@ -1877,12 +1866,10 @@ rectify_client_ciphers(STACK_OF(SSL_CIPHER) **ciphers)
|
||||
smartlist_free(unsupported);
|
||||
}
|
||||
|
||||
sk_SSL_CIPHER_free(*ciphers);
|
||||
*ciphers = sk_SSL_CIPHER_dup(CLIENT_CIPHER_STACK);
|
||||
tor_assert(*ciphers);
|
||||
set_ssl_ciphers_to_list(ssl, CLIENT_CIPHER_STACK);
|
||||
|
||||
#else
|
||||
(void)ciphers;
|
||||
(void)ciphers;
|
||||
#endif
|
||||
}
|
||||
|
||||
@ -1926,7 +1913,7 @@ tor_tls_new(int sock, int isServer)
|
||||
goto err;
|
||||
}
|
||||
if (!isServer)
|
||||
rectify_client_ciphers(&result->ssl->cipher_list);
|
||||
rectify_client_ciphers(result->ssl);
|
||||
result->socket = sock;
|
||||
bio = BIO_new_socket(sock, BIO_NOCLOSE);
|
||||
if (! bio) {
|
||||
@ -2019,13 +2006,8 @@ tor_tls_unblock_renegotiation(tor_tls_t *tls)
|
||||
{
|
||||
/* Yes, we know what we are doing here. No, we do not treat a renegotiation
|
||||
* as authenticating any earlier-received data. */
|
||||
if (use_unsafe_renegotiation_flag) {
|
||||
tls->ssl->s3->flags |= SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION;
|
||||
}
|
||||
if (use_unsafe_renegotiation_op) {
|
||||
SSL_set_options(tls->ssl,
|
||||
SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION);
|
||||
}
|
||||
SSL_set_options(tls->ssl,
|
||||
SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION);
|
||||
}
|
||||
|
||||
/** If this version of openssl supports it, turn off renegotiation on
|
||||
@ -2035,21 +2017,19 @@ tor_tls_unblock_renegotiation(tor_tls_t *tls)
|
||||
void
|
||||
tor_tls_block_renegotiation(tor_tls_t *tls)
|
||||
{
|
||||
#ifdef SUPPORT_UNSAFE_RENEGOTIATION_FLAG
|
||||
tls->ssl->s3->flags &= ~SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION;
|
||||
#else
|
||||
(void) tls;
|
||||
#endif
|
||||
}
|
||||
|
||||
/** Assert that the flags that allow legacy renegotiation are still set */
|
||||
void
|
||||
tor_tls_assert_renegotiation_unblocked(tor_tls_t *tls)
|
||||
{
|
||||
if (use_unsafe_renegotiation_flag) {
|
||||
tor_assert(0 != (tls->ssl->s3->flags &
|
||||
SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION));
|
||||
}
|
||||
if (use_unsafe_renegotiation_op) {
|
||||
long options = SSL_get_options(tls->ssl);
|
||||
tor_assert(0 != (options & SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION));
|
||||
}
|
||||
long options = SSL_get_options(tls->ssl);
|
||||
tor_assert(0 != (options & SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION));
|
||||
}
|
||||
|
||||
/** Return whether this tls initiated the connect (client) or
|
||||
@ -2180,7 +2160,7 @@ tor_tls_handshake(tor_tls_t *tls)
|
||||
tor_assert(tls->ssl);
|
||||
tor_assert(tls->state == TOR_TLS_ST_HANDSHAKE);
|
||||
check_no_tls_errors();
|
||||
oldstate = tls->ssl->state;
|
||||
oldstate = SSL_state(tls->ssl);
|
||||
if (tls->isServer) {
|
||||
log_debug(LD_HANDSHAKE, "About to call SSL_accept on %p (%s)", tls,
|
||||
SSL_state_string_long(tls->ssl));
|
||||
@ -2190,7 +2170,7 @@ tor_tls_handshake(tor_tls_t *tls)
|
||||
SSL_state_string_long(tls->ssl));
|
||||
r = SSL_connect(tls->ssl);
|
||||
}
|
||||
if (oldstate != tls->ssl->state)
|
||||
if (oldstate != SSL_state(tls->ssl))
|
||||
log_debug(LD_HANDSHAKE, "After call, %p was in state %s",
|
||||
tls, SSL_state_string_long(tls->ssl));
|
||||
/* We need to call this here and not earlier, since OpenSSL has a penchant
|
||||
@ -2209,6 +2189,14 @@ tor_tls_handshake(tor_tls_t *tls)
|
||||
return r;
|
||||
}
|
||||
|
||||
/* SSL_clear_mode was introduced in 0.9.8m */
|
||||
#ifndef SSL_clear_mode
|
||||
static void SSL_clear_mode(SSL *s, unsigned long m)
|
||||
{
|
||||
s->mode &= ~m;
|
||||
}
|
||||
#endif
|
||||
|
||||
/** Perform the final part of the intial TLS handshake on <b>tls</b>. This
|
||||
* should be called for the first handshake only: it determines whether the v1
|
||||
* or the v2 handshake was used, and adjusts things for the renegotiation
|
||||
@ -2225,8 +2213,7 @@ tor_tls_finish_handshake(tor_tls_t *tls)
|
||||
if (tls->isServer) {
|
||||
SSL_set_info_callback(tls->ssl, NULL);
|
||||
SSL_set_verify(tls->ssl, SSL_VERIFY_PEER, always_accept_verify_cb);
|
||||
/* There doesn't seem to be a clear OpenSSL API to clear mode flags. */
|
||||
tls->ssl->mode &= ~SSL_MODE_NO_AUTO_CHAIN;
|
||||
SSL_clear_mode(tls->ssl, SSL_MODE_NO_AUTO_CHAIN);
|
||||
#ifdef V2_HANDSHAKE_SERVER
|
||||
if (tor_tls_client_is_using_v2_ciphers(tls->ssl)) {
|
||||
/* This check is redundant, but back when we did it in the callback,
|
||||
@ -2851,12 +2838,23 @@ tor_tls_get_tlssecrets(tor_tls_t *tls, uint8_t *secrets_out)
|
||||
* Set *<b>rbuf_capacity</b> to the amount of storage allocated for the read
|
||||
* buffer and *<b>rbuf_bytes</b> to the amount actually used.
|
||||
* Set *<b>wbuf_capacity</b> to the amount of storage allocated for the write
|
||||
* buffer and *<b>wbuf_bytes</b> to the amount actually used. */
|
||||
void
|
||||
* buffer and *<b>wbuf_bytes</b> to the amount actually used.
|
||||
*
|
||||
* Return 0 on success, -1 on failure.*/
|
||||
int
|
||||
tor_tls_get_buffer_sizes(tor_tls_t *tls,
|
||||
size_t *rbuf_capacity, size_t *rbuf_bytes,
|
||||
size_t *wbuf_capacity, size_t *wbuf_bytes)
|
||||
{
|
||||
#if OPENSSL_VERSION_NUMBER >= OPENSSL_V_SERIES(1,1,0)
|
||||
(void)tls;
|
||||
(void)rbuf_capacity;
|
||||
(void)rbuf_bytes;
|
||||
(void)wbuf_capacity;
|
||||
(void)wbuf_bytes;
|
||||
|
||||
return -1;
|
||||
#else
|
||||
if (tls->ssl->s3->rbuf.buf)
|
||||
*rbuf_capacity = tls->ssl->s3->rbuf.len;
|
||||
else
|
||||
@ -2867,6 +2865,8 @@ tor_tls_get_buffer_sizes(tor_tls_t *tls,
|
||||
*wbuf_capacity = 0;
|
||||
*rbuf_bytes = tls->ssl->s3->rbuf.left;
|
||||
*wbuf_bytes = tls->ssl->s3->wbuf.left;
|
||||
return 0;
|
||||
#endif
|
||||
}
|
||||
|
||||
#ifdef USE_BUFFEREVENTS
|
||||
|
||||
@ -92,7 +92,7 @@ size_t tor_tls_get_forced_write_size(tor_tls_t *tls);
|
||||
void tor_tls_get_n_raw_bytes(tor_tls_t *tls,
|
||||
size_t *n_read, size_t *n_written);
|
||||
|
||||
void tor_tls_get_buffer_sizes(tor_tls_t *tls,
|
||||
int tor_tls_get_buffer_sizes(tor_tls_t *tls,
|
||||
size_t *rbuf_capacity, size_t *rbuf_bytes,
|
||||
size_t *wbuf_capacity, size_t *wbuf_bytes);
|
||||
|
||||
|
||||
@ -1336,7 +1336,7 @@ run_scheduled_events(time_t now)
|
||||
if (time_to.add_entropy < now) {
|
||||
if (time_to.add_entropy) {
|
||||
/* We already seeded once, so don't die on failure. */
|
||||
crypto_seed_rng(0);
|
||||
crypto_seed_rng();
|
||||
}
|
||||
/** How often do we add more entropy to OpenSSL's RNG pool? */
|
||||
#define ENTROPY_INTERVAL (60*60)
|
||||
@ -2333,12 +2333,13 @@ dumpstats(int severity)
|
||||
if (conn->type == CONN_TYPE_OR) {
|
||||
or_connection_t *or_conn = TO_OR_CONN(conn);
|
||||
if (or_conn->tls) {
|
||||
tor_tls_get_buffer_sizes(or_conn->tls, &rbuf_cap, &rbuf_len,
|
||||
&wbuf_cap, &wbuf_len);
|
||||
tor_log(severity, LD_GENERAL,
|
||||
"Conn %d: %d/%d bytes used on OpenSSL read buffer; "
|
||||
"%d/%d bytes used on write buffer.",
|
||||
i, (int)rbuf_len, (int)rbuf_cap, (int)wbuf_len, (int)wbuf_cap);
|
||||
if (tor_tls_get_buffer_sizes(or_conn->tls, &rbuf_cap, &rbuf_len,
|
||||
&wbuf_cap, &wbuf_len) == 0) {
|
||||
tor_log(severity, LD_GENERAL,
|
||||
"Conn %d: %d/%d bytes used on OpenSSL read buffer; "
|
||||
"%d/%d bytes used on write buffer.",
|
||||
i, (int)rbuf_len, (int)rbuf_cap, (int)wbuf_len, (int)wbuf_cap);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@ -502,8 +502,7 @@ bench_dh(void)
|
||||
" %f millisec each.\n", NANOCOUNT(start, end, iters)/1e6);
|
||||
}
|
||||
|
||||
#if (!defined(OPENSSL_NO_EC) \
|
||||
&& OPENSSL_VERSION_NUMBER >= OPENSSL_V_SERIES(1,0,0))
|
||||
#if !defined(OPENSSL_NO_EC)
|
||||
#define HAVE_EC_BENCHMARKS
|
||||
static void
|
||||
bench_ecdh_impl(int nid, const char *name)
|
||||
@ -625,7 +624,7 @@ main(int argc, const char **argv)
|
||||
|
||||
reset_perftime();
|
||||
|
||||
crypto_seed_rng(1);
|
||||
crypto_seed_rng();
|
||||
crypto_init_siphash_key();
|
||||
options = options_new();
|
||||
init_logging(1);
|
||||
|
||||
@ -74,7 +74,7 @@ test_crypto_rng(void *arg)
|
||||
|
||||
/* Try out RNG. */
|
||||
(void)arg;
|
||||
tt_assert(! crypto_seed_rng(0));
|
||||
tt_assert(! crypto_seed_rng());
|
||||
crypto_rand(data1, 100);
|
||||
crypto_rand(data2, 100);
|
||||
tt_mem_op(data1,OP_NE, data2,100);
|
||||
|
||||
@ -358,7 +358,7 @@ main(int argc, char **argv)
|
||||
|
||||
init_logging(1);
|
||||
crypto_global_init(1, NULL, NULL);
|
||||
crypto_seed_rng(1);
|
||||
crypto_seed_rng();
|
||||
|
||||
rq = replyqueue_new(as_flags);
|
||||
tor_assert(rq);
|
||||
|
||||
@ -270,7 +270,7 @@ main(int c, const char **v)
|
||||
return 1;
|
||||
}
|
||||
crypto_set_tls_dh_prime();
|
||||
crypto_seed_rng(1);
|
||||
crypto_seed_rng();
|
||||
rep_hist_init();
|
||||
network_init();
|
||||
setup_directory();
|
||||
|
||||
@ -533,7 +533,7 @@ main(int argc, char **argv)
|
||||
fprintf(stderr, "Couldn't initialize crypto library.\n");
|
||||
return 1;
|
||||
}
|
||||
if (crypto_seed_rng(1)) {
|
||||
if (crypto_seed_rng()) {
|
||||
fprintf(stderr, "Couldn't seed RNG.\n");
|
||||
goto done;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user