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 1;
}
+/* Fill a ClientRandom or ServerRandom field of length len. Returns <= 0
+ * on failure, 1 on success. */
+int ssl_fill_hello_random(SSL *s, int server, unsigned char *result, int len)
+ {
+ int send_time = 0;
+ if (len < 4)
+ return 0;
+ if (server)
+ send_time = (s->mode & SSL_MODE_SEND_SERVERHELLO_TIME) != 0;
+ else
+ send_time = (s->mode & SSL_MODE_SEND_CLIENTHELLO_TIME) != 0;
+ if (send_time)
+ {
+ unsigned long Time = time(NULL);
+ unsigned char *p = result;
+ l2n(Time, p);
+ return RAND_pseudo_bytes(p, len-4);
+ }
+ else
+ return RAND_pseudo_bytes(result, len);
+ }
+
static int ssl23_client_hello(SSL *s)
{
unsigned char *buf;
unsigned char *p,*d;
int i,ch_len;
- unsigned long Time,l;
+ unsigned long l;
int ssl2_compat;
int version = 0, version_major, version_minor;
+ int al = 0;
#ifndef OPENSSL_NO_COMP
int j;
SSL_COMP *comp;
#endif
int ret;
+ unsigned long mask, options = s->options;
- ssl2_compat = (s->options & SSL_OP_NO_SSLv2) ? 0 : 1;
+ ssl2_compat = (options & SSL_OP_NO_SSLv2) ? 0 : 1;
if (ssl2_compat && ssl23_no_ssl2_ciphers(s))
ssl2_compat = 0;
- if (!(s->options & SSL_OP_NO_TLSv1))
- {
+ /*
+ * 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;
+
+ 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)
{
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->custom_cli_ext_records_count != 0)
+ ssl2_compat = 0;
+ if (s->ctx->cli_supp_data_records_count != 0)
+ ssl2_compat = 0;
}
#endif
#endif
p=s->s3->client_random;
- Time=(unsigned long)time(NULL); /* Time */
- l2n(Time,p);
- if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
+ if (ssl_fill_hello_random(s, 0, p, SSL3_RANDOM_SIZE) <= 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;
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;
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)
+ if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH, &al)) == NULL)
{
+ ssl3_send_alert(s,SSL3_AL_FATAL,al);
SSLerr(SSL_F_SSL23_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
return -1;
}
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;
#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]);
projects / openssl.git / blobdiff