*/
#define REUSE_CIPHER_BUG
+#define NETSCAPE_HANG_BUG
+
#include <stdio.h>
-#include "buffer.h"
-#include "rand.h"
-#include "objects.h"
-#include "evp.h"
-#include "x509.h"
+#include <openssl/buffer.h>
+#include <openssl/rand.h>
+#include <openssl/objects.h>
+#include <openssl/md5.h>
+#include <openssl/sha.h>
+#include <openssl/evp.h>
+#include <openssl/x509.h>
#include "ssl_locl.h"
-#define BREAK break
-/* SSLerr(SSL_F_SSL3_ACCEPT,ERR_R_MALLOC_FAILURE);
- * SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,ERR_R_MALLOC_FAILURE);
- * SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
- * SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,ERR_R_MALLOC_FAILURE);
- * SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,ERR_R_MALLOC_FAILURE);
- */
+#ifndef NO_KRB5
+#include "kssl.h"
+#endif /* NO_KRB5 */
-#ifndef NOPROTO
+static SSL_METHOD *ssl3_get_server_method(int ver);
static int ssl3_get_client_hello(SSL *s);
+static int ssl3_check_client_hello(SSL *s);
static int ssl3_send_server_hello(SSL *s);
static int ssl3_send_server_key_exchange(SSL *s);
static int ssl3_send_certificate_request(SSL *s);
static int ssl3_send_server_done(SSL *s);
-static int ssl3_get_cert_verify(SSL *s);
static int ssl3_get_client_key_exchange(SSL *s);
static int ssl3_get_client_certificate(SSL *s);
+static int ssl3_get_cert_verify(SSL *s);
static int ssl3_send_hello_request(SSL *s);
-#else
-
-static int ssl3_get_client_hello();
-static int ssl3_send_server_hello();
-static int ssl3_send_server_key_exchange();
-static int ssl3_send_certificate_request();
-static int ssl3_send_server_done();
-static int ssl3_get_cert_verify();
-static int ssl3_get_client_key_exchange();
-static int ssl3_get_client_certificate();
-static int ssl3_send_hello_request();
-
-#endif
-
-static SSL_METHOD *ssl3_get_server_method(ver)
-int ver;
+static SSL_METHOD *ssl3_get_server_method(int ver)
{
if (ver == SSL3_VERSION)
return(SSLv3_server_method());
return(NULL);
}
-SSL_METHOD *SSLv3_server_method()
+SSL_METHOD *SSLv3_server_method(void)
{
static int init=1;
static SSL_METHOD SSLv3_server_data;
if (init)
{
- init=0;
memcpy((char *)&SSLv3_server_data,(char *)sslv3_base_method(),
sizeof(SSL_METHOD));
SSLv3_server_data.ssl_accept=ssl3_accept;
SSLv3_server_data.get_ssl_method=ssl3_get_server_method;
+ init=0;
}
return(&SSLv3_server_data);
}
-int ssl3_accept(s)
-SSL *s;
+int ssl3_accept(SSL *s)
{
BUF_MEM *buf;
unsigned long l,Time=time(NULL);
void (*cb)()=NULL;
long num1;
int ret= -1;
- CERT *ct;
- BIO *under;
int new_state,state,skip=0;
- RAND_seed((unsigned char *)&Time,sizeof(Time));
+ RAND_add(&Time,sizeof(Time),0);
ERR_clear_error();
clear_sys_error();
if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
s->in_handshake++;
-#ifdef undef
- /* FIX THIS EAY EAY EAY */
- /* we don't actually need a cert, we just need a cert or a DH_tmp */
- if (((s->session == NULL) || (s->session->cert == NULL)) &&
- (s->cert == NULL))
+ if (s->cert == NULL)
{
SSLerr(SSL_F_SSL3_ACCEPT,SSL_R_NO_CERTIFICATE_SET);
- ret= -1;
- goto end;
+ return(-1);
}
-#endif
for (;;)
{
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);
if ((s->version>>8) != 3)
- abort();
- /* s->version=SSL3_VERSION; */
+ {
+ SSLerr(SSL_F_SSL3_ACCEPT, SSL_R_INTERNAL_ERROR);
+ return -1;
+ }
s->type=SSL_ST_ACCEPT;
if (s->init_buf == NULL)
if (s->state != SSL_ST_RENEGOTIATE)
{
- s->state=SSL3_ST_SR_CLNT_HELLO_A;
ssl3_init_finished_mac(s);
- s->ctx->sess_accept++;
+ s->state=SSL3_ST_SR_CLNT_HELLO_A;
+ s->ctx->stats.sess_accept++;
}
else
{
- s->ctx->sess_accept_renegotiate++;
+ s->ctx->stats.sess_accept_renegotiate++;
s->state=SSL3_ST_SW_HELLO_REQ_A;
}
break;
break;
case SSL3_ST_SW_HELLO_REQ_C:
- /* remove buffering on output */
- under=BIO_pop(s->wbio);
- if (under != NULL)
- s->wbio=under;
- else
- abort(); /* ok */
- BIO_free(s->bbio);
- s->bbio=NULL;
-
s->state=SSL_ST_OK;
ret=1;
goto end;
case SSL3_ST_SW_KEY_EXCH_A:
case SSL3_ST_SW_KEY_EXCH_B:
l=s->s3->tmp.new_cipher->algorithms;
- if (s->session->cert == NULL)
- {
- if (s->cert != NULL)
- {
- CRYPTO_add(&s->cert->references,1,CRYPTO_LOCK_SSL_CERT);
- s->session->cert=s->cert;
- }
- else
- {
- CRYPTO_add(&s->ctx->default_cert->references,1,CRYPTO_LOCK_SSL_CERT);
- s->session->cert=s->ctx->default_cert;
- }
- }
- ct=s->session->cert;
/* clear this, it may get reset by
* send_server_key_exchange */
- if (s->options & SSL_OP_EPHEMERAL_RSA)
+ if ((s->options & SSL_OP_EPHEMERAL_RSA)
+#ifndef NO_KRB5
+ && !(l & SSL_KRB5)
+#endif /* NO_KRB5 */
+ )
s->s3->tmp.use_rsa_tmp=1;
else
s->s3->tmp.use_rsa_tmp=0;
/* only send if a DH key exchange, fortezza or
* RSA but we have a sign only certificate */
- if ( s->s3->tmp.use_rsa_tmp ||
- (l & (SSL_DH|SSL_kFZA)) ||
- ((l & SSL_kRSA) &&
- ((ct->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL)||
- ((l & SSL_EXPORT) &&
- (EVP_PKEY_size(ct->pkeys[SSL_PKEY_RSA_ENC].privatekey)*8 > 512)
- )
- )
+ if (s->s3->tmp.use_rsa_tmp
+ || (l & (SSL_DH|SSL_kFZA))
+ || ((l & SSL_kRSA)
+ && (s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL
+ || (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher)
+ && EVP_PKEY_size(s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)
+ )
+ )
+ )
)
- )
{
ret=ssl3_send_server_key_exchange(s);
if (ret <= 0) goto end;
case SSL3_ST_SW_CERT_REQ_A:
case SSL3_ST_SW_CERT_REQ_B:
- if (!(s->verify_mode & SSL_VERIFY_PEER) ||
+ if (/* don't request cert unless asked for it: */
+ !(s->verify_mode & SSL_VERIFY_PEER) ||
+ /* if SSL_VERIFY_CLIENT_ONCE is set,
+ * don't request cert during re-negotiation: */
((s->session->peer != NULL) &&
- (s->verify_mode & SSL_VERIFY_CLIENT_ONCE)))
+ (s->verify_mode & SSL_VERIFY_CLIENT_ONCE)) ||
+ /* never request cert in anonymous ciphersuites
+ * (see section "Certificate request" in SSL 3 drafts
+ * and in RFC 2246): */
+ ((s->s3->tmp.new_cipher->algorithms & SSL_aNULL) &&
+ /* ... except when the application insists on verification
+ * (against the specs, but s3_clnt.c accepts this for SSL 3) */
+ !(s->verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT)))
{
/* no cert request */
skip=1;
s->s3->tmp.cert_request=1;
ret=ssl3_send_certificate_request(s);
if (ret <= 0) goto end;
+#ifndef NETSCAPE_HANG_BUG
s->state=SSL3_ST_SW_SRVR_DONE_A;
+#else
+ s->state=SSL3_ST_SW_FLUSH;
+ s->s3->tmp.next_state=SSL3_ST_SR_CERT_A;
+#endif
s->init_num=0;
}
break;
case SSL3_ST_SR_CERT_A:
case SSL3_ST_SR_CERT_B:
- /* could be sent for a DH cert, even if we
- * have not asked for it :-) */
- ret=ssl3_get_client_certificate(s);
- if (ret <= 0) goto end;
- s->init_num=0;
- s->state=SSL3_ST_SR_KEY_EXCH_A;
+ /* Check for second client hello (MS SGC) */
+ ret = ssl3_check_client_hello(s);
+ if (ret <= 0)
+ goto end;
+ if (ret == 2)
+ s->state = SSL3_ST_SR_CLNT_HELLO_C;
+ else {
+ /* could be sent for a DH cert, even if we
+ * have not asked for it :-) */
+ ret=ssl3_get_client_certificate(s);
+ if (ret <= 0) goto end;
+ s->init_num=0;
+ s->state=SSL3_ST_SR_KEY_EXCH_A;
+ }
break;
case SSL3_ST_SR_KEY_EXCH_A:
* a client cert, it can be verified */
s->method->ssl3_enc->cert_verify_mac(s,
&(s->s3->finish_dgst1),
- &(s->s3->tmp.finish_md[0]));
+ &(s->s3->tmp.cert_verify_md[0]));
s->method->ssl3_enc->cert_verify_mac(s,
&(s->s3->finish_dgst2),
- &(s->s3->tmp.finish_md[MD5_DIGEST_LENGTH]));
+ &(s->s3->tmp.cert_verify_md[MD5_DIGEST_LENGTH]));
break;
case SSL3_ST_SW_FINISHED_B:
ret=ssl3_send_finished(s,
SSL3_ST_SW_FINISHED_A,SSL3_ST_SW_FINISHED_B,
- s->method->ssl3_enc->server_finished,
- s->method->ssl3_enc->server_finished_len);
+ s->method->ssl3_enc->server_finished_label,
+ s->method->ssl3_enc->server_finished_label_len);
if (ret <= 0) goto end;
s->state=SSL3_ST_SW_FLUSH;
if (s->hit)
s->init_buf=NULL;
/* remove buffering on output */
- under=BIO_pop(s->wbio);
- if (under != NULL)
- s->wbio=under;
- else
- abort(); /* ok */
- BIO_free(s->bbio);
- s->bbio=NULL;
+ ssl_free_wbio_buffer(s);
s->new_session=0;
s->init_num=0;
ssl_update_cache(s,SSL_SESS_CACHE_SERVER);
- s->ctx->sess_accept_good++;
+ s->ctx->stats.sess_accept_good++;
/* s->server=1; */
s->handshake_func=ssl3_accept;
ret=1;
return(ret);
}
-static int ssl3_send_hello_request(s)
-SSL *s;
+static int ssl3_send_hello_request(SSL *s)
{
unsigned char *p;
if (s->state == SSL3_ST_SW_HELLO_REQ_A)
{
p=(unsigned char *)s->init_buf->data;
- *(p++)=SSL3_MT_CLIENT_REQUEST;
+ *(p++)=SSL3_MT_HELLO_REQUEST;
*(p++)=0;
*(p++)=0;
*(p++)=0;
return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
}
-static int ssl3_get_client_hello(s)
-SSL *s;
+static int ssl3_check_client_hello(SSL *s)
+ {
+ int ok;
+ long n;
+
+ n=ssl3_get_message(s,
+ SSL3_ST_SR_CERT_A,
+ SSL3_ST_SR_CERT_B,
+ -1,
+ SSL3_RT_MAX_PLAIN_LENGTH,
+ &ok);
+ if (!ok) return((int)n);
+ s->s3->tmp.reuse_message = 1;
+ if (s->s3->tmp.message_type == SSL3_MT_CLIENT_HELLO)
+ {
+ /* Throw away what we have done so far in the current handshake,
+ * which will now be aborted. (A full SSL_clear would be too much.)
+ * I hope that tmp.dh is the only thing that may need to be cleared
+ * when a handshake is not completed ... */
+#ifndef NO_DH
+ if (s->s3->tmp.dh != NULL)
+ {
+ DH_free(s->s3->tmp.dh);
+ s->s3->tmp.dh = NULL;
+ }
+#endif
+ return 2;
+ }
+ return 1;
+}
+
+static int ssl3_get_client_hello(SSL *s)
{
int i,j,ok,al,ret= -1;
long n;
unsigned long id;
- unsigned char *p,*d;
+ unsigned char *p,*d,*q;
SSL_CIPHER *c;
- STACK *ciphers=NULL;
+ SSL_COMP *comp=NULL;
+ STACK_OF(SSL_CIPHER) *ciphers=NULL;
/* We do this so that we will respond with our native type.
* If we are TLSv1 and we get SSLv3, we will respond with TLSv1,
if (!ok) return((int)n);
d=p=(unsigned char *)s->init_buf->data;
- /* The version number has already been checked in ssl3_get_message.
- * I a native TLSv1/SSLv3 method, the match must be correct except
- * perhaps for the first message */
+ /* use version from inside client hello, not from record header
+ * (may differ: see RFC 2246, Appendix E, second paragraph) */
+ s->client_version=(((int)p[0])<<8)|(int)p[1];
p+=2;
/* load the client random */
{ /* previous session */
s->hit=1;
}
- else
+ else if (i == -1)
+ goto err;
+ else /* i == 0 */
{
if (!ssl_get_new_session(s,1))
goto err;
j=0;
id=s->session->cipher->id;
- for (i=0; i<sk_num(ciphers); i++)
+#ifdef CIPHER_DEBUG
+ printf("client sent %d ciphers\n",sk_num(ciphers));
+#endif
+ for (i=0; i<sk_SSL_CIPHER_num(ciphers); i++)
{
- c=(SSL_CIPHER *)sk_value(ciphers,i);
+ c=sk_SSL_CIPHER_value(ciphers,i);
+#ifdef CIPHER_DEBUG
+ printf("client [%2d of %2d]:%s\n",
+ i,sk_num(ciphers),SSL_CIPHER_get_name(c));
+#endif
if (c->id == id)
{
j=1;
}
if (j == 0)
{
- if ((s->options & SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG) && (sk_num(ciphers) == 1))
+ if ((s->options & SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG) && (sk_SSL_CIPHER_num(ciphers) == 1))
{
/* Very bad for multi-threading.... */
- s->session->cipher=
- (SSL_CIPHER *)sk_value(ciphers,0);
+ s->session->cipher=sk_SSL_CIPHER_value(ciphers,
+ 0);
}
else
{
/* compression */
i= *(p++);
+ q=p;
for (j=0; j<i; j++)
+ {
if (p[j] == 0) break;
+ }
p+=i;
if (j >= i)
goto f_err;
}
+ /* Worst case, we will use the NULL compression, but if we have other
+ * options, we will now look for them. We have i-1 compression
+ * algorithms from the client, starting at q. */
+ s->s3->tmp.new_compression=NULL;
+ if (s->ctx->comp_methods != NULL)
+ { /* See if we have a match */
+ int m,nn,o,v,done=0;
+
+ nn=sk_SSL_COMP_num(s->ctx->comp_methods);
+ for (m=0; m<nn; m++)
+ {
+ comp=sk_SSL_COMP_value(s->ctx->comp_methods,m);
+ v=comp->id;
+ for (o=0; o<i; o++)
+ {
+ if (v == q[o])
+ {
+ done=1;
+ break;
+ }
+ }
+ if (done) break;
+ }
+ if (done)
+ s->s3->tmp.new_compression=comp;
+ else
+ comp=NULL;
+ }
+
/* TLS does not mind if there is extra stuff */
if (s->version == SSL3_VERSION)
{
}
}
- /* do nothing with compression */
-
/* Given s->session->ciphers and ssl_get_ciphers_by_id(s), we must
* pick a cipher */
if (!s->hit)
{
+ s->session->compress_meth=(comp == NULL)?0:comp->id;
if (s->session->ciphers != NULL)
- sk_free(s->session->ciphers);
+ sk_SSL_CIPHER_free(s->session->ciphers);
s->session->ciphers=ciphers;
if (ciphers == NULL)
{
}
ciphers=NULL;
c=ssl3_choose_cipher(s,s->session->ciphers,
- ssl_get_ciphers_by_id(s));
+ ssl_get_ciphers_by_id(s));
if (c == NULL)
{
{
/* Session-id reuse */
#ifdef REUSE_CIPHER_BUG
- STACK *sk;
+ STACK_OF(SSL_CIPHER) *sk;
SSL_CIPHER *nc=NULL;
SSL_CIPHER *ec=NULL;
if (s->options & SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG)
{
sk=s->session->ciphers;
- for (i=0; i<sk_num(sk); i++)
+ for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
{
- c=(SSL_CIPHER *)sk_value(sk,i);
+ c=sk_SSL_CIPHER_value(sk,i);
if (c->algorithms & SSL_eNULL)
nc=c;
- if (c->algorithms & SSL_EXP)
+ if (SSL_C_IS_EXPORT(c))
ec=c;
}
if (nc != NULL)
* compression - basically ignored right now
* ssl version is set - sslv3
* s->session - The ssl session has been setup.
- * s->hit - sesson reuse flag
+ * s->hit - session reuse flag
* s->tmp.new_cipher - the new cipher to use.
*/
ssl3_send_alert(s,SSL3_AL_FATAL,al);
}
err:
- if (ciphers != NULL) sk_free(ciphers);
+ if (ciphers != NULL) sk_SSL_CIPHER_free(ciphers);
return(ret);
}
-static int ssl3_send_server_hello(s)
-SSL *s;
+static int ssl3_send_server_hello(SSL *s)
{
unsigned char *buf;
unsigned char *p,*d;
p=s->s3->server_random;
Time=time(NULL); /* Time */
l2n(Time,p);
- RAND_bytes(p,SSL3_RANDOM_SIZE-sizeof(Time));
+ RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-sizeof(Time));
/* Do the message type and length last */
d=p= &(buf[4]);
p+=i;
/* put the compression method */
- *(p++)=0;
+ if (s->s3->tmp.new_compression == NULL)
+ *(p++)=0;
+ else
+ *(p++)=s->s3->tmp.new_compression->id;
/* do the header */
l=(p-d);
return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
}
-static int ssl3_send_server_done(s)
-SSL *s;
+static int ssl3_send_server_done(SSL *s)
{
unsigned char *p;
return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
}
-static int ssl3_send_server_key_exchange(s)
-SSL *s;
+static int ssl3_send_server_key_exchange(SSL *s)
{
#ifndef NO_RSA
unsigned char *q;
int j,num;
RSA *rsa;
unsigned char md_buf[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
+ unsigned int u;
#endif
#ifndef NO_DH
- DH *dh,*dhp;
+ DH *dh=NULL,*dhp;
#endif
EVP_PKEY *pkey;
unsigned char *p,*d;
if (s->state == SSL3_ST_SW_KEY_EXCH_A)
{
type=s->s3->tmp.new_cipher->algorithms & SSL_MKEY_MASK;
- cert=s->session->cert;
+ cert=s->cert;
buf=s->init_buf;
if (type & SSL_kRSA)
{
rsa=cert->rsa_tmp;
- if ((rsa == NULL) && (s->ctx->default_cert->rsa_tmp_cb != NULL))
+ if ((rsa == NULL) && (s->cert->rsa_tmp_cb != NULL))
+ {
+ rsa=s->cert->rsa_tmp_cb(s,
+ SSL_C_IS_EXPORT(s->s3->tmp.new_cipher),
+ SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher));
+ if(rsa == NULL)
{
- rsa=s->ctx->default_cert->rsa_tmp_cb(s,
- !(s->s3->tmp.new_cipher->algorithms
- &SSL_NOT_EXP));
+ al=SSL_AD_HANDSHAKE_FAILURE;
+ SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,SSL_R_ERROR_GENERATING_TMP_RSA_KEY);
+ goto f_err;
+ }
CRYPTO_add(&rsa->references,1,CRYPTO_LOCK_RSA);
cert->rsa_tmp=rsa;
}
if (type & SSL_kEDH)
{
dhp=cert->dh_tmp;
- if ((dhp == NULL) && (cert->dh_tmp_cb != NULL))
- dhp=cert->dh_tmp_cb(s,
- !(s->s3->tmp.new_cipher->algorithms
- &SSL_NOT_EXP));
+ if ((dhp == NULL) && (s->cert->dh_tmp_cb != NULL))
+ dhp=s->cert->dh_tmp_cb(s,
+ SSL_C_IS_EXPORT(s->s3->tmp.new_cipher),
+ SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher));
if (dhp == NULL)
{
al=SSL_AD_HANDSHAKE_FAILURE;
SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,SSL_R_MISSING_TMP_DH_KEY);
goto f_err;
}
+
+ if (s->s3->tmp.dh != NULL)
+ {
+ DH_free(dh);
+ SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE, SSL_R_INTERNAL_ERROR);
+ goto err;
+ }
+
if ((dh=DHparams_dup(dhp)) == NULL)
{
SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,ERR_R_DH_LIB);
q+=i;
j+=i;
}
- i=RSA_private_encrypt(j,md_buf,&(p[2]),
- pkey->pkey.rsa,RSA_PKCS1_PADDING);
- if (i <= 0)
+ if (RSA_sign(NID_md5_sha1, md_buf, j,
+ &(p[2]), &u, pkey->pkey.rsa) <= 0)
{
SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,ERR_LIB_RSA);
goto err;
}
- s2n(i,p);
- n+=i+2;
+ s2n(u,p);
+ n+=u+2;
}
else
#endif
s->init_off=0;
}
- /* SSL3_ST_SW_KEY_EXCH_B */
+ s->state = SSL3_ST_SW_KEY_EXCH_B;
return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
f_err:
ssl3_send_alert(s,SSL3_AL_FATAL,al);
return(-1);
}
-static int ssl3_send_certificate_request(s)
-SSL *s;
+static int ssl3_send_certificate_request(SSL *s)
{
unsigned char *p,*d;
int i,j,nl,off,n;
- STACK *sk=NULL;
+ STACK_OF(X509_NAME) *sk=NULL;
X509_NAME *name;
BUF_MEM *buf;
nl=0;
if (sk != NULL)
{
- for (i=0; i<sk_num(sk); i++)
+ for (i=0; i<sk_X509_NAME_num(sk); i++)
{
- name=(X509_NAME *)sk_value(sk,i);
+ name=sk_X509_NAME_value(sk,i);
j=i2d_X509_NAME(name,NULL);
if (!BUF_MEM_grow(buf,4+n+j+2))
{
s->init_num=n+4;
s->init_off=0;
+#ifdef NETSCAPE_HANG_BUG
+ p=(unsigned char *)s->init_buf->data + s->init_num;
+
+ /* do the header */
+ *(p++)=SSL3_MT_SERVER_DONE;
+ *(p++)=0;
+ *(p++)=0;
+ *(p++)=0;
+ s->init_num += 4;
+#endif
+
}
/* SSL3_ST_SW_CERT_REQ_B */
return(-1);
}
-static int ssl3_get_client_key_exchange(s)
-SSL *s;
+static int ssl3_get_client_key_exchange(SSL *s)
{
int i,al,ok;
long n;
unsigned long l;
unsigned char *p;
+#ifndef NO_RSA
RSA *rsa=NULL;
EVP_PKEY *pkey=NULL;
+#endif
#ifndef NO_DH
BIGNUM *pub=NULL;
DH *dh_srvr;
#endif
+#ifndef NO_KRB5
+ KSSL_ERR kssl_err;
+#endif /* NO_KRB5 */
n=ssl3_get_message(s,
SSL3_ST_SR_KEY_EXCH_A,
SSL3_ST_SR_KEY_EXCH_B,
SSL3_MT_CLIENT_KEY_EXCHANGE,
- 400, /* ???? */
+ 2048, /* ??? */
&ok);
if (!ok) return((int)n);
/* FIX THIS UP EAY EAY EAY EAY */
if (s->s3->tmp.use_rsa_tmp)
{
- if ((s->session->cert != NULL) &&
- (s->session->cert->rsa_tmp != NULL))
- rsa=s->session->cert->rsa_tmp;
- else if ((s->ctx->default_cert != NULL) &&
- (s->ctx->default_cert->rsa_tmp != NULL))
- rsa=s->ctx->default_cert->rsa_tmp;
+ if ((s->cert != NULL) && (s->cert->rsa_tmp != NULL))
+ rsa=s->cert->rsa_tmp;
/* Don't do a callback because rsa_tmp should
* be sent already */
if (rsa == NULL)
i=RSA_private_decrypt((int)n,p,p,rsa,RSA_PKCS1_PADDING);
-#if 1
- /* If a bad decrypt, use a random master key */
- if ((i != SSL_MAX_MASTER_KEY_LENGTH) ||
- ((p[0] != (s->version>>8)) ||
- (p[1] != (s->version & 0xff))))
- {
- p[0]=(s->version>>8);
- p[1]=(s->version & 0xff);
- RAND_bytes(&(p[2]),SSL_MAX_MASTER_KEY_LENGTH-2);
- i=SSL_MAX_MASTER_KEY_LENGTH;
- }
-#else
if (i != SSL_MAX_MASTER_KEY_LENGTH)
{
al=SSL_AD_DECODE_ERROR;
goto f_err;
}
- if ((p[0] != (s->version>>8)) || (p[1] != (s->version & 0xff)))
+ if (!((p[0] == (s->client_version>>8)) && (p[1] == (s->client_version & 0xff))))
{
- al=SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_BAD_PROTOCOL_VERSION_NUMBER);
- goto f_err;
+ /* The premaster secret must contain the same version number as the
+ * ClientHello to detect version rollback attacks (strangely, the
+ * protocol does not offer such protection for DH ciphersuites).
+ * However, buggy clients exist that send the negotiated protocol
+ * version instead if the server does not support the requested
+ * protocol version.
+ * If SSL_OP_TLS_ROLLBACK_BUG is set, tolerate such clients. */
+ if (!((s->options & SSL_OP_TLS_ROLLBACK_BUG) &&
+ (p[0] == (s->version>>8)) && (p[1] == (s->version & 0xff))))
+ {
+ al=SSL_AD_DECODE_ERROR;
+ SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_BAD_PROTOCOL_VERSION_NUMBER);
+ goto f_err;
+ }
}
-#endif
s->session->master_key_length=
s->method->ssl3_enc->generate_master_secret(s,
}
else
#endif
+#ifndef NO_KRB5
+ if (l & SSL_kKRB5)
+ {
+ krb5_error_code krb5rc;
+ KSSL_CTX *kssl_ctx = s->kssl_ctx;
+
+ if (!kssl_ctx) kssl_ctx = kssl_ctx_new();
+ if ((krb5rc = kssl_sget_tkt(kssl_ctx,
+ s->init_buf->data, s->init_buf->length,
+ &kssl_err)) != 0)
+ {
+#ifdef KSSL_DEBUG
+ printf("kssl_sget_tkt rtn %d [%d]\n",
+ krb5rc, kssl_err.reason);
+ if (kssl_err.text)
+ printf("kssl_err text= %s\n", kssl_err.text);
+#endif /* KSSL_DEBUG */
+ SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
+ kssl_err.reason);
+ goto err;
+ }
+
+#ifdef KSSL_DEBUG
+ kssl_ctx_show(kssl_ctx);
+#endif /* KSSL_DEBUG */
+
+ /* 19991013 VRS - 3DES is kind of bogus here,
+ ** at least until Kerberos supports 3DES. The only
+ ** real secret is the 8-byte Kerberos session key;
+ ** the other key material (client_random, server_random)
+ ** could be sniffed. Nonces may help against replays though.
+ **
+ ** Alternate code for Kerberos Purists:
+ **
+ ** memcpy(s->session->master_key, kssl_ctx->key, kssl_ctx->length);
+ ** s->session->master_key_length = kssl_ctx->length;
+ */
+ s->session->master_key_length=
+ s->method->ssl3_enc->generate_master_secret(s,
+ s->session->master_key, kssl_ctx->key, kssl_ctx->length);
+ /* Was doing kssl_ctx_free() here, but it caused problems for apache.
+ ** kssl_ctx = kssl_ctx_free(kssl_ctx);
+ ** if (s->kssl_ctx) s->kssl_ctx = NULL;
+ */
+ }
+ else
+#endif /* NO_KRB5 */
{
al=SSL_AD_HANDSHAKE_FAILURE;
SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_UNKNOWN_CIPHER_TYPE);
return(-1);
}
-static int ssl3_get_cert_verify(s)
-SSL *s;
+static int ssl3_get_cert_verify(SSL *s)
{
EVP_PKEY *pkey=NULL;
unsigned char *p;
#ifndef NO_RSA
if (pkey->type == EVP_PKEY_RSA)
{
- i=RSA_public_decrypt(i,p,p,pkey->pkey.rsa,RSA_PKCS1_PADDING);
+ i=RSA_verify(NID_md5_sha1, s->s3->tmp.cert_verify_md,
+ MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH, p, i,
+ pkey->pkey.rsa);
if (i < 0)
{
al=SSL_AD_DECRYPT_ERROR;
SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_BAD_RSA_DECRYPT);
goto f_err;
}
- if ((i != (MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH)) ||
- memcmp(&(s->s3->tmp.finish_md[0]),p,
- MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH))
+ if (i == 0)
{
al=SSL_AD_DECRYPT_ERROR;
SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_BAD_RSA_SIGNATURE);
if (pkey->type == EVP_PKEY_DSA)
{
j=DSA_verify(pkey->save_type,
- &(s->s3->tmp.finish_md[MD5_DIGEST_LENGTH]),
+ &(s->s3->tmp.cert_verify_md[MD5_DIGEST_LENGTH]),
SHA_DIGEST_LENGTH,p,i,pkey->pkey.dsa);
if (j <= 0)
{
ssl3_send_alert(s,SSL3_AL_FATAL,al);
}
end:
+ EVP_PKEY_free(pkey);
return(ret);
}
-static int ssl3_get_client_certificate(s)
-SSL *s;
+static int ssl3_get_client_certificate(SSL *s)
{
int i,ok,al,ret= -1;
X509 *x=NULL;
unsigned long l,nc,llen,n;
unsigned char *p,*d,*q;
- STACK *sk=NULL;
+ STACK_OF(X509) *sk=NULL;
n=ssl3_get_message(s,
SSL3_ST_SR_CERT_A,
al=SSL_AD_HANDSHAKE_FAILURE;
goto f_err;
}
- /* If tls asked for a client cert we must return a 0 list */
+ /* If tls asked for a client cert, the client must return a 0 list */
if ((s->version > SSL3_VERSION) && s->s3->tmp.cert_request)
{
SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_TLS_PEER_DID_NOT_RESPOND_WITH_CERTIFICATE_LIST);
}
d=p=(unsigned char *)s->init_buf->data;
- if ((sk=sk_new_null()) == NULL)
+ if ((sk=sk_X509_new_null()) == NULL)
{
SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,ERR_R_MALLOC_FAILURE);
goto err;
SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
goto f_err;
}
- if (!sk_push(sk,(char *)x))
+ if (!sk_X509_push(sk,x))
{
SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,ERR_R_MALLOC_FAILURE);
goto err;
nc+=l+3;
}
- if (sk_num(sk) <= 0)
+ if (sk_X509_num(sk) <= 0)
{
/* TLS does not mind 0 certs returned */
if (s->version == SSL3_VERSION)
}
}
- /* This should not be needed */
- if (s->session->peer != NULL)
+ if (s->session->peer != NULL) /* This should not be needed */
X509_free(s->session->peer);
- s->session->peer=(X509 *)sk_shift(sk);
+ s->session->peer=sk_X509_shift(sk);
+ s->session->verify_result = s->verify_result;
+
+ /* With the current implementation, sess_cert will always be NULL
+ * when we arrive here. */
+ if (s->session->sess_cert == NULL)
+ {
+ s->session->sess_cert = ssl_sess_cert_new();
+ if (s->session->sess_cert == NULL)
+ {
+ SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ }
+ if (s->session->sess_cert->cert_chain != NULL)
+ sk_X509_pop_free(s->session->sess_cert->cert_chain, X509_free);
+ s->session->sess_cert->cert_chain=sk;
+ /* Inconsistency alert: cert_chain does *not* include the
+ * peer's own certificate, while we do include it in s3_clnt.c */
+
+ sk=NULL;
ret=1;
if (0)
}
err:
if (x != NULL) X509_free(x);
- if (sk != NULL) sk_pop_free(sk,X509_free);
+ if (sk != NULL) sk_X509_pop_free(sk,X509_free);
return(ret);
}
-int ssl3_send_server_certificate(s)
-SSL *s;
+int ssl3_send_server_certificate(SSL *s)
{
unsigned long l;
X509 *x;
if (s->state == SSL3_ST_SW_CERT_A)
{
x=ssl_get_server_send_cert(s);
- if (x == NULL)
+ if (x == NULL &&
+ /* VRS: allow null cert if auth == KRB5 */
+ (s->s3->tmp.new_cipher->algorithms
+ & (SSL_MKEY_MASK|SSL_AUTH_MASK))
+ != (SSL_aKRB5|SSL_kKRB5))
{
SSLerr(SSL_F_SSL3_SEND_SERVER_CERTIFICATE,SSL_R_INTERNAL_ERROR);
return(0);