/* ssl/s23_srvr.c */
-/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
*/
#include <stdio.h>
-#include "buffer.h"
-#include "rand.h"
-#include "objects.h"
-#include "evp.h"
+#include <openssl/buffer.h>
+#include <openssl/rand.h>
+#include <openssl/objects.h>
+#include <openssl/evp.h>
#include "ssl_locl.h"
-#define BREAK break
-
-#ifndef NOPROTO
+static SSL_METHOD *ssl23_get_server_method(int ver);
int ssl23_get_client_hello(SSL *s);
-#else
-int ssl23_get_client_hello();
-#endif
-
-static SSL_METHOD *ssl23_get_server_method(ver)
-int ver;
+static SSL_METHOD *ssl23_get_server_method(int ver)
{
- if (ver == 2)
+ if (ver == SSL2_VERSION)
return(SSLv2_server_method());
- else if (ver == 3)
+ if (ver == SSL3_VERSION)
return(SSLv3_server_method());
+ else if (ver == TLS1_VERSION)
+ return(TLSv1_server_method());
else
return(NULL);
}
-SSL_METHOD *SSLv23_server_method()
+SSL_METHOD *SSLv23_server_method(void)
{
static int init=1;
static SSL_METHOD SSLv23_server_data;
if (init)
{
- init=0;
memcpy((char *)&SSLv23_server_data,
(char *)sslv23_base_method(),sizeof(SSL_METHOD));
SSLv23_server_data.ssl_accept=ssl23_accept;
SSLv23_server_data.get_ssl_method=ssl23_get_server_method;
+ init=0;
}
return(&SSLv23_server_data);
}
-int ssl23_accept(s)
-SSL *s;
+int ssl23_accept(SSL *s)
{
BUF_MEM *buf;
unsigned long Time=time(NULL);
int ret= -1;
int new_state,state;
- RAND_seed((unsigned char *)&Time,sizeof(Time));
+ RAND_seed(&Time,sizeof(Time));
ERR_clear_error();
- errno=0;
+ clear_sys_error();
if (s->info_callback != NULL)
cb=s->info_callback;
case SSL_ST_BEFORE|SSL_ST_ACCEPT:
case SSL_ST_OK|SSL_ST_ACCEPT:
+ s->server=1;
if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
- s->version=3;
+ /* s->version=SSL3_VERSION; */
s->type=SSL_ST_ACCEPT;
if (s->init_buf == NULL)
ssl3_init_finished_mac(s);
s->state=SSL23_ST_SR_CLNT_HELLO_A;
- s->ctx->sess_accept++;
+ s->ctx->stats.sess_accept++;
s->init_num=0;
break;
ret=ssl23_get_client_hello(s);
if (ret >= 0) cb=NULL;
goto end;
- break;
+ /* break; */
default:
SSLerr(SSL_F_SSL23_ACCEPT,SSL_R_UNKNOWN_STATE);
}
-int ssl23_get_client_hello(s)
-SSL *s;
+int ssl23_get_client_hello(SSL *s)
{
- char buf_space[8];
+ char buf_space[11]; /* request this many bytes in initial read */
char *buf= &(buf_space[0]);
unsigned char *p,*d,*dd;
unsigned int i;
unsigned int csl,sil,cl;
int n=0,j;
- BIO *bbio;
int type=0,use_sslv2_strong=0;
+ int v[2];
- /* read the initial header */
if (s->state == SSL23_ST_SR_CLNT_HELLO_A)
{
+ /* read the initial header */
+ v[0]=v[1]=0;
+
if (!ssl3_setup_buffers(s)) goto err;
- n=ssl23_read_bytes(s,7);
- if (n != 7) return(n);
+ n=ssl23_read_bytes(s, sizeof buf_space);
+ if (n != sizeof buf_space) return(n); /* n == -1 || n == 0 */
p=s->packet;
if ((p[0] & 0x80) && (p[2] == SSL2_MT_CLIENT_HELLO))
{
- /* SSLv2 header */
+ /*
+ * SSLv2 header
+ */
if ((p[3] == 0x00) && (p[4] == 0x02))
{
+ v[0]=p[3]; v[1]=p[4];
/* SSLv2 */
- type=1;
+ if (!(s->options & SSL_OP_NO_SSLv2))
+ type=1;
}
else if (p[3] == SSL3_VERSION_MAJOR)
{
- if (s->ctx->options & SSL_OP_NON_EXPORT_FIRST)
+ v[0]=p[3]; v[1]=p[4];
+ /* SSLv3/TLSv1 */
+ if (p[4] >= TLS1_VERSION_MINOR)
{
- STACK *sk;
+ if (!(s->options & SSL_OP_NO_TLSv1))
+ {
+ s->version=TLS1_VERSION;
+ /* type=2; */ /* done later to survive restarts */
+ s->state=SSL23_ST_SR_CLNT_HELLO_B;
+ }
+ else if (!(s->options & SSL_OP_NO_SSLv3))
+ {
+ s->version=SSL3_VERSION;
+ /* type=2; */
+ s->state=SSL23_ST_SR_CLNT_HELLO_B;
+ }
+ else if (!(s->options & SSL_OP_NO_SSLv2))
+ {
+ type=1;
+ }
+ }
+ else if (!(s->options & SSL_OP_NO_SSLv3))
+ {
+ s->version=SSL3_VERSION;
+ /* type=2; */
+ s->state=SSL23_ST_SR_CLNT_HELLO_B;
+ }
+ else if (!(s->options & SSL_OP_NO_SSLv2))
+ type=1;
+
+ if (s->options & SSL_OP_NON_EXPORT_FIRST)
+ /* Not only utterly confusing, but broken
+ * ('fractured programming'?) -- the details
+ * of this block nearly make it work
+ * as intended in this environment, but on one
+ * of the fine points (w.r.t. restarts) it fails.
+ * The obvious fix would be even more devastating
+ * to program structure; if you want the functionality,
+ * throw this away and implement it in a way
+ * that makes sense */
+ {
+ STACK_OF(SSL_CIPHER) *sk;
SSL_CIPHER *c;
int ne2,ne3;
if (sk != NULL)
{
ne2=ne3=0;
- for (j=0; j<sk_num(sk); j++)
+ for (j=0; j<sk_SSL_CIPHER_num(sk); j++)
{
- c=(SSL_CIPHER *)sk_value(sk,j);
- if (!(c->algorithms & SSL_EXP))
+ c=sk_SSL_CIPHER_value(sk,j);
+ if (!SSL_C_IS_EXPORT(c))
{
if ((c->id>>24L) == 2L)
ne2=1;
}
}
}
- /* SSLv3 */
- s->state=SSL23_ST_SR_CLNT_HELLO_B;
}
}
else if ((p[0] == SSL3_RT_HANDSHAKE) &&
(p[1] == SSL3_VERSION_MAJOR) &&
- (p[5] == SSL3_MT_CLIENT_HELLO))
+ (p[5] == SSL3_MT_CLIENT_HELLO) &&
+ (p[9] == p[1]))
{
- /* true SSLv3 */
- type=3;
+ /*
+ * SSLv3 or tls1 header
+ */
+
+ /* we must look at client_version inside the client hello: */
+ v[0]=p[9]; v[1]=p[10];
+ if (v[1] >= TLS1_VERSION_MINOR)
+ {
+ if (!(s->options & SSL_OP_NO_TLSv1))
+ {
+ s->version=TLS1_VERSION;
+ type=3;
+ }
+ else if (!(s->options & SSL_OP_NO_SSLv3))
+ {
+ s->version=SSL3_VERSION;
+ type=3;
+ }
+ }
+ else if (!(s->options & SSL_OP_NO_SSLv3))
+ {
+ s->version=SSL3_VERSION;
+ type=3;
+ }
}
- /* I will not introduce error codes since that will probably
- * disrupt the error codes alread allocated and could play
- * havoc with dynamic allocation. Upgrade to 0.9.x :-)
- */
else if ((strncmp("GET ", (char *)p,4) == 0) ||
(strncmp("POST ",(char *)p,5) == 0) ||
(strncmp("HEAD ",(char *)p,5) == 0) ||
(strncmp("PUT ", (char *)p,4) == 0))
{
+ SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_HTTP_REQUEST);
goto err;
}
else if (strncmp("CONNECT",(char *)p,7) == 0)
{
+ SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_HTTPS_PROXY_REQUEST);
goto err;
}
}
next_bit:
if (s->state == SSL23_ST_SR_CLNT_HELLO_B)
{
- /* we have a SSLv3 in a SSLv2 header */
+ /* we have SSLv3/TLSv1 in an SSLv2 header
+ * (other cases skip this state) */
+
type=2;
p=s->packet;
+ v[0] = p[3]; /* == SSL3_VERSION_MAJOR */
+ v[1] = p[4];
+
n=((p[0]&0x7f)<<8)|p[1];
if (n > (1024*4))
{
goto err;
}
- *(d++)=SSL3_VERSION_MAJOR;
- *(d++)=SSL3_VERSION_MINOR;
+ *(d++) = SSL3_VERSION_MAJOR; /* == v[0] */
+ *(d++) = v[1];
/* lets populate the random area */
/* get the chalenge_length */
}
s2n(j,dd);
- /* compression */
+ /* COMPRESSION */
*(d++)=1;
*(d++)=0;
s->s3->tmp.message_size=i;
}
+ /* imaginary new state (for program structure): */
+ /* s->state = SSL23_SR_CLNT_HELLO_C */
+
if (type == 1)
{
/* we are talking sslv2 */
- /* we need to clean up the SSLv3 setup and put in the
+ /* we need to clean up the SSLv3/TLSv1 setup and put in the
* sslv2 stuff. */
if (s->s2 == NULL)
}
s->state=SSL2_ST_GET_CLIENT_HELLO_A;
- if ((s->ctx->options & SSL_OP_MSIE_SSLV2_RSA_PADDING) ||
+ if ((s->options & SSL_OP_MSIE_SSLV2_RSA_PADDING) ||
use_sslv2_strong)
s->s2->ssl2_rollback=0;
else
s->s2->ssl2_rollback=1;
- /* setup the 5 bytes we have read so we get them from
+ /* setup the n bytes we have read so we get them from
* the sslv2 buffer */
s->rstate=SSL_ST_READ_HEADER;
s->packet_length=n;
if ((type == 2) || (type == 3))
{
- /* we have sslv3 */
+ /* we have SSLv3/TLSv1 (type 2: SSL2 style, type 3: SSL3/TLS style) */
- if (s->bbio == NULL)
- {
- bbio=BIO_new(BIO_f_buffer());
- if (bbio == NULL)
- goto err;
- s->bbio=bbio;
- }
- else
- bbio=s->bbio;
- BIO_reset(bbio);
- if (!BIO_set_write_buffer_size(bbio,16*1024))
- goto err;
- s->wbio=BIO_push(bbio,s->wbio);
+ if (!ssl_init_wbio_buffer(s,1)) goto err;
/* we are in this state */
s->state=SSL3_ST_SR_CLNT_HELLO_A;
s->s3->rbuf.offset=0;
}
- s->method=SSLv3_server_method();
+ if (s->version == TLS1_VERSION)
+ s->method = TLSv1_server_method();
+ else
+ s->method = SSLv3_server_method();
+#if 0 /* ssl3_get_client_hello does this */
+ s->client_version=(v[0]<<8)|v[1];
+#endif
s->handshake_func=s->method->ssl_accept;
}
if (buf != buf_space) Free(buf);
return(-1);
}
-
projects / openssl.git / blobdiff