return(SSLv3_client_method());
else if (ver == TLS1_VERSION)
return(TLSv1_client_method());
+ else if (ver == TLS1_1_VERSION)
+ return(TLSv1_1_client_method());
+ else if (ver == TLS1_2_VERSION)
+ return(TLSv1_2_client_method());
else
return(NULL);
}
return(ret);
}
+static int ssl23_no_ssl2_ciphers(SSL *s)
+ {
+ SSL_CIPHER *cipher;
+ STACK_OF(SSL_CIPHER) *ciphers;
+ int i;
+ ciphers = SSL_get_ciphers(s);
+ for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++)
+ {
+ cipher = sk_SSL_CIPHER_value(ciphers, i);
+ if (cipher->algorithm_ssl == SSL_SSLV2)
+ return 0;
+ }
+ return 1;
+ }
static int ssl23_client_hello(SSL *s)
{
unsigned char *buf;
unsigned char *p,*d;
- int i,j,ch_len;
+ int i,ch_len;
unsigned long Time,l;
int ssl2_compat;
int version = 0, version_major, version_minor;
+#ifndef OPENSSL_NO_COMP
+ int j;
SSL_COMP *comp;
+#endif
int ret;
+ unsigned long mask, options = s->options;
+
+ ssl2_compat = (options & SSL_OP_NO_SSLv2) ? 0 : 1;
+
+ if (ssl2_compat && ssl23_no_ssl2_ciphers(s))
+ ssl2_compat = 0;
+
+ /*
+ * SSL_OP_NO_X disables all protocols above X *if* there are
+ * some protocols below X enabled. This is required in order
+ * to maintain "version capability" vector contiguous. So
+ * that if application wants to disable TLS1.0 in favour of
+ * TLS1>=1, it would be insufficient to pass SSL_NO_TLSv1, the
+ * answer is SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2.
+ */
+ mask = SSL_OP_NO_TLSv1_1|SSL_OP_NO_TLSv1
+#if !defined(OPENSSL_NO_SSL3)
+ |SSL_OP_NO_SSLv3
+#endif
+#if !defined(OPENSSL_NO_SSL2)
+ |(ssl2_compat?SSL_OP_NO_SSLv2:0)
+#endif
+ ;
+#if !defined(OPENSSL_NO_TLS1_2_CLIENT)
+ version = TLS1_2_VERSION;
- ssl2_compat = (s->options & SSL_OP_NO_SSLv2) ? 0 : 1;
-
- if (!(s->options & SSL_OP_NO_TLSv1))
- {
+ if ((options & SSL_OP_NO_TLSv1_2) && (options & mask) != mask)
+ version = TLS1_1_VERSION;
+#else
+ version = TLS1_1_VERSION;
+#endif
+ mask &= ~SSL_OP_NO_TLSv1_1;
+ if ((options & SSL_OP_NO_TLSv1_1) && (options & mask) != mask)
version = TLS1_VERSION;
- }
- else if (!(s->options & SSL_OP_NO_SSLv3))
- {
+ mask &= ~SSL_OP_NO_TLSv1;
+#if !defined(OPENSSL_NO_SSL3)
+ if ((options & SSL_OP_NO_TLSv1) && (options & mask) != mask)
version = SSL3_VERSION;
- }
- else if (!(s->options & SSL_OP_NO_SSLv2))
- {
+ mask &= ~SSL_OP_NO_SSLv3;
+#endif
+#if !defined(OPENSSL_NO_SSL2)
+ if ((options & SSL_OP_NO_SSLv3) && (options & mask) != mask)
version = SSL2_VERSION;
+#endif
+
+#ifndef OPENSSL_NO_TLSEXT
+ if (version != SSL2_VERSION)
+ {
+ /* have to disable SSL 2.0 compatibility if we need TLS extensions */
+
+ if (s->tlsext_hostname != NULL)
+ ssl2_compat = 0;
+ if (s->tlsext_status_type != -1)
+ ssl2_compat = 0;
+#ifdef TLSEXT_TYPE_opaque_prf_input
+ if (s->ctx->tlsext_opaque_prf_input_callback != 0 || s->tlsext_opaque_prf_input != NULL)
+ ssl2_compat = 0;
+#endif
+ if (s->ctx->tlsext_authz_server_audit_proof_cb != NULL)
+ ssl2_compat = 0;
}
+#endif
buf=(unsigned char *)s->init_buf->data;
if (s->state == SSL23_ST_CW_CLNT_HELLO_A)
if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
return -1;
- if (version == TLS1_VERSION)
+ if (version == TLS1_2_VERSION)
+ {
+ version_major = TLS1_2_VERSION_MAJOR;
+ version_minor = TLS1_2_VERSION_MINOR;
+ }
+ else if (tls1_suiteb(s))
+ {
+ SSLerr(SSL_F_SSL23_CLIENT_HELLO,
+ SSL_R_ONLY_TLS_1_2_ALLOWED_IN_SUITEB_MODE);
+ return -1;
+ }
+ else if (version == TLS1_1_VERSION)
+ {
+ version_major = TLS1_1_VERSION_MAJOR;
+ version_minor = TLS1_1_VERSION_MINOR;
+ }
+ else if (version == TLS1_VERSION)
{
version_major = TLS1_VERSION_MAJOR;
version_minor = TLS1_VERSION_MINOR;
}
+#ifdef OPENSSL_FIPS
+ else if(FIPS_mode())
+ {
+ SSLerr(SSL_F_SSL23_CLIENT_HELLO,
+ SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
+ return -1;
+ }
+#endif
else if (version == SSL3_VERSION)
{
version_major = SSL3_VERSION_MAJOR;
ch_len=SSL2_MAX_CHALLENGE_LENGTH;
/* write out sslv2 challenge */
+ /* Note that ch_len must be <= SSL3_RANDOM_SIZE (32),
+ because it is one of SSL2_MAX_CHALLENGE_LENGTH (32)
+ or SSL2_MAX_CHALLENGE_LENGTH (16), but leave the
+ check in for futurproofing */
if (SSL3_RANDOM_SIZE < ch_len)
i=SSL3_RANDOM_SIZE;
else
SSLerr(SSL_F_SSL23_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
return -1;
}
+#ifdef OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
+ /* Some servers hang if client hello > 256 bytes
+ * as hack workaround chop number of supported ciphers
+ * to keep it well below this if we use TLS v1.2
+ */
+ if (TLS1_get_version(s) >= TLS1_2_VERSION
+ && i > OPENSSL_MAX_TLS1_2_CIPHER_LENGTH)
+ i = OPENSSL_MAX_TLS1_2_CIPHER_LENGTH & ~1;
+#endif
s2n(i,p);
p+=i;
*(p++)=0; /* Add the NULL method */
#ifndef OPENSSL_NO_TLSEXT
+ /* TLS extensions*/
+ if (ssl_prepare_clienthello_tlsext(s) <= 0)
+ {
+ SSLerr(SSL_F_SSL23_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
+ return -1;
+ }
if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
{
SSLerr(SSL_F_SSL23_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
d=buf;
*(d++) = SSL3_RT_HANDSHAKE;
*(d++) = version_major;
- *(d++) = version_minor; /* arguably we should send the *lowest* suported version here
- * (indicating, e.g., TLS 1.0 in "SSL 3.0 format") */
+ /* Some servers hang if we use long client hellos
+ * and a record number > TLS 1.0.
+ */
+ if (TLS1_get_client_version(s) > TLS1_VERSION)
+ *(d++) = 1;
+ else
+ *(d++) = version_minor;
s2n((int)l,d);
/* number of bytes to write */
if (ssl2_compat)
s->msg_callback(1, SSL2_VERSION, 0, s->init_buf->data+2, ret-2, s, s->msg_callback_arg);
else
+ {
+ s->msg_callback(1, version, SSL3_RT_HEADER, s->init_buf->data, 5, s, s->msg_callback_arg);
s->msg_callback(1, version, SSL3_RT_HANDSHAKE, s->init_buf->data+5, ret-5, s, s->msg_callback_arg);
+ }
}
return ret;
ch_len=SSL2_MAX_CHALLENGE_LENGTH;
/* write out sslv2 challenge */
+ /* Note that ch_len must be <= SSL3_RANDOM_SIZE (32), because
+ it is one of SSL2_MAX_CHALLENGE_LENGTH (32) or
+ SSL2_MAX_CHALLENGE_LENGTH (16), but leave the check in for
+ futurproofing */
i=(SSL3_RANDOM_SIZE < ch_len)
?SSL3_RANDOM_SIZE:ch_len;
s->s2->challenge_length=i;
#endif
}
else if (p[1] == SSL3_VERSION_MAJOR &&
- (p[2] == SSL3_VERSION_MINOR || p[2] == TLS1_VERSION_MINOR) &&
+ p[2] <= TLS1_2_VERSION_MINOR &&
((p[0] == SSL3_RT_HANDSHAKE && p[5] == SSL3_MT_SERVER_HELLO) ||
(p[0] == SSL3_RT_ALERT && p[3] == 0 && p[4] == 2)))
{
if ((p[2] == SSL3_VERSION_MINOR) &&
!(s->options & SSL_OP_NO_SSLv3))
{
+#ifdef OPENSSL_FIPS
+ if(FIPS_mode())
+ {
+ SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,
+ SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
+ goto err;
+ }
+#endif
s->version=SSL3_VERSION;
s->method=SSLv3_client_method();
}
s->version=TLS1_VERSION;
s->method=TLSv1_client_method();
}
+ else if ((p[2] == TLS1_1_VERSION_MINOR) &&
+ !(s->options & SSL_OP_NO_TLSv1_1))
+ {
+ s->version=TLS1_1_VERSION;
+ s->method=TLSv1_1_client_method();
+ }
+ else if ((p[2] == TLS1_2_VERSION_MINOR) &&
+ !(s->options & SSL_OP_NO_TLSv1_2))
+ {
+ s->version=TLS1_2_VERSION;
+ s->method=TLSv1_2_client_method();
+ }
else
{
SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
}
if (s->msg_callback)
+ {
+ s->msg_callback(0, s->version, SSL3_RT_HEADER, p, 5, s, s->msg_callback_arg);
s->msg_callback(0, s->version, SSL3_RT_ALERT, p+5, 2, s, s->msg_callback_arg);
+ }
s->rwstate=SSL_NOTHING;
SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,SSL_AD_REASON_OFFSET+p[6]);
* for SSLv3 */
s->rstate=SSL_ST_READ_HEADER;
s->packet_length=n;
+ if (s->s3->rbuf.buf == NULL)
+ if (!ssl3_setup_read_buffer(s))
+ goto err;
s->packet= &(s->s3->rbuf.buf[0]);
memcpy(s->packet,buf,n);
s->s3->rbuf.left=n;
if (!ssl_get_new_session(s,0))
goto err;
- s->first_packet=1;
return(SSL_connect(s));
err:
return(-1);
projects / openssl.git / blobdiff