int ssl23_get_client_hello(SSL *s);
static SSL_METHOD *ssl23_get_server_method(int ver)
{
+#ifndef OPENSSL_NO_SSL2
if (ver == SSL2_VERSION)
return(SSLv2_server_method());
+#endif
if (ver == SSL3_VERSION)
return(SSLv3_server_method());
else if (ver == TLS1_VERSION)
int ret= -1;
int new_state,state;
- RAND_seed(&Time,sizeof(Time));
+ RAND_add(&Time,sizeof(Time),0);
ERR_clear_error();
clear_sys_error();
int ssl23_get_client_hello(SSL *s)
{
- char buf_space[11]; /* request this many bytes in initial read */
+ char buf_space[11]; /* Request this many bytes in initial read.
+ * We can detect SSL 3.0/TLS 1.0 Client Hellos
+ * ('type == 3') correctly only when the following
+ * is in a single record, which is not guaranteed by
+ * the protocol specification:
+ * Byte Content
+ * 0 type \
+ * 1/2 version > record header
+ * 3/4 length /
+ * 5 msg_type \
+ * 6-8 length > Client Hello message
+ * 9/10 client_version /
+ */
char *buf= &(buf_space[0]);
unsigned char *p,*d,*dd;
unsigned int i;
unsigned int csl,sil,cl;
int n=0,j;
- int type=0,use_sslv2_strong=0;
+ int type=0;
int v[2];
+#ifndef OPENSSL_NO_RSA
+ int use_sslv2_strong=0;
+#endif
if (s->state == SSL23_ST_SR_CLNT_HELLO_A)
{
* throw this away and implement it in a way
* that makes sense */
{
+#if 0
STACK_OF(SSL_CIPHER) *sk;
SSL_CIPHER *c;
int ne2,ne3;
if (n <= 0) return(n);
p=s->packet;
- if ((buf=Malloc(n)) == NULL)
+ if ((buf=OPENSSL_malloc(n)) == NULL)
{
SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,ERR_R_MALLOC_FAILURE);
goto err;
goto next_bit;
}
}
+#else
+ SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNSUPPORTED_OPTION);
+ goto err;
+#endif
}
}
}
else if ((p[0] == SSL3_RT_HANDSHAKE) &&
(p[1] == SSL3_VERSION_MAJOR) &&
(p[5] == SSL3_MT_CLIENT_HELLO) &&
- (p[9] == p[1]))
+ ((p[3] == 0 && p[4] < 5 /* silly record length? */)
+ || (p[9] == p[1])))
{
/*
* SSLv3 or tls1 header
*/
- /* we must look at client_version inside the client hello: */
- v[0]=p[9]; v[1]=p[10];
+ v[0]=p[1]; /* major version (= SSL3_VERSION_MAJOR) */
+ /* We must look at client_version inside the Client Hello message
+ * to get the correct minor version.
+ * However if we have only a pathologically small fragment of the
+ * Client Hello message, this would be difficult, we'd have
+ * to read at least one additional record to find out.
+ * This doesn't usually happen in real life, so we just complain
+ * for now.
+ */
+ if (p[3] == 0 && p[4] < 6)
+ {
+ SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_RECORD_TOO_SMALL);
+ goto err;
+ }
+ v[1]=p[10]; /* minor version according to client_version */
if (v[1] >= TLS1_VERSION_MINOR)
{
if (!(s->options & SSL_OP_NO_TLSv1))
}
}
else if (!(s->options & SSL_OP_NO_SSLv3))
+ {
+ s->version=SSL3_VERSION;
type=3;
+ }
}
else if ((strncmp("GET ", (char *)p,4) == 0) ||
(strncmp("POST ",(char *)p,5) == 0) ||
}
}
-next_bit:
if (s->state == SSL23_ST_SR_CLNT_HELLO_B)
{
/* we have SSLv3/TLSv1 in an SSLv2 header
*(d++) = v[1];
/* lets populate the random area */
- /* get the chalenge_length */
+ /* get the challenge_length */
i=(cl > SSL3_RANDOM_SIZE)?SSL3_RANDOM_SIZE:cl;
memset(d,0,SSL3_RANDOM_SIZE);
memcpy(&(d[SSL3_RANDOM_SIZE-i]),&(p[csl+sil]),i);
if (type == 1)
{
+#ifdef OPENSSL_NO_SSL2
+ SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
+ goto err;
+#else
/* we are talking sslv2 */
/* we need to clean up the SSLv3/TLSv1 setup and put in the
* sslv2 stuff. */
s->state=SSL2_ST_GET_CLIENT_HELLO_A;
if ((s->options & SSL_OP_MSIE_SSLV2_RSA_PADDING) ||
- use_sslv2_strong)
+ use_sslv2_strong ||
+ (s->options & SSL_OP_NO_TLSv1 && s->options & SSL_OP_NO_SSLv3))
s->s2->ssl2_rollback=0;
else
+ /* reject SSL 2.0 session if client supports SSL 3.0 or TLS 1.0
+ * (SSL 3.0 draft/RFC 2246, App. E.2) */
s->s2->ssl2_rollback=1;
/* setup the n bytes we have read so we get them from
s->method=SSLv2_server_method();
s->handshake_func=s->method->ssl_accept;
+#endif
}
if ((type == 2) || (type == 3))
}
s->init_num=0;
- if (buf != buf_space) Free(buf);
+ if (buf != buf_space) OPENSSL_free(buf);
s->first_packet=1;
return(SSL_accept(s));
err:
- if (buf != buf_space) Free(buf);
+ if (buf != buf_space) OPENSSL_free(buf);
return(-1);
}