#include <openssl/buffer.h>
#include <openssl/rand.h>
+#ifndef EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
+# define EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK 0
+#endif
+
+#if defined(OPENSSL_SMALL_FOOTPRINT) || \
+ !( defined(AES_ASM) && ( \
+ defined(__x86_64) || defined(__x86_64__) || \
+ defined(_M_AMD64) || defined(_M_X64) || \
+ defined(__INTEL__) ) \
+ )
+# undef EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
+# define EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK 0
+#endif
+
static int do_ssl3_write(SSL *s, int type, const unsigned char *buf,
unsigned int len, int create_empty_fragment);
static int ssl3_get_record(SSL *s);
if (version != s->version)
{
SSLerr(SSL_F_SSL3_GET_RECORD,SSL_R_WRONG_VERSION_NUMBER);
- if ((s->version & 0xFF00) == (version & 0xFF00))
+ if ((s->version & 0xFF00) == (version & 0xFF00) && !s->enc_write_ctx && !s->write_hash)
/* Send back error using their minor version number :-) */
s->version = (unsigned short)version;
al=SSL_AD_PROTOCOL_VERSION;
/* decrypt in place in 'rr->input' */
rr->data=rr->input;
rr->orig_len=rr->length;
+ /* If in encrypt-then-mac mode calculate mac from encrypted record.
+ * All the details below are public so no timing details can leak.
+ */
+ if (SSL_USE_ETM(s) && s->read_hash)
+ {
+ unsigned char *mac;
+ mac_size=EVP_MD_CTX_size(s->read_hash);
+ OPENSSL_assert(mac_size <= EVP_MAX_MD_SIZE);
+ if (rr->length < mac_size)
+ {
+ al=SSL_AD_DECODE_ERROR;
+ SSLerr(SSL_F_SSL3_GET_RECORD,SSL_R_LENGTH_TOO_SHORT);
+ goto f_err;
+ }
+ rr->length -= mac_size;
+ mac = rr->data + rr->length;
+ i=s->method->ssl3_enc->mac(s,md,0 /* not send */);
+ if (i < 0 || CRYPTO_memcmp(md, mac, (size_t)mac_size) != 0)
+ {
+ al=SSL_AD_BAD_RECORD_MAC;
+ SSLerr(SSL_F_SSL3_GET_RECORD,SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC);
+ goto f_err;
+ }
+ }
enc_err = s->method->ssl3_enc->enc(s,0);
/* enc_err is:
/* r->length is now the compressed data plus mac */
if ((sess != NULL) &&
(s->enc_read_ctx != NULL) &&
- (EVP_MD_CTX_md(s->read_hash) != NULL))
+ (EVP_MD_CTX_md(s->read_hash) != NULL) && !SSL_USE_ETM(s))
{
/* s->read_hash != NULL => mac_size != -1 */
unsigned char *mac = NULL;
int ssl3_write_bytes(SSL *s, int type, const void *buf_, int len)
{
const unsigned char *buf=buf_;
- unsigned int tot,n,nw;
+ int tot;
+ unsigned int n,nw;
+#if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
+ unsigned int max_send_fragment;
+#endif
+ SSL3_BUFFER *wb=&(s->s3->wbuf);
int i;
s->rwstate=SSL_NOTHING;
}
}
+ /* first check if there is a SSL3_BUFFER still being written
+ * out. This will happen with non blocking IO */
+ if (wb->left != 0)
+ {
+ i = ssl3_write_pending(s,type,&buf[tot],s->s3->wpend_tot);
+ if (i<=0)
+ {
+ /* XXX should we ssl3_release_write_buffer if i<0? */
+ s->s3->wnum=tot;
+ return i;
+ }
+ tot += i; /* this might be last fragment */
+ }
+
+#if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
+ /*
+ * Depending on platform multi-block can deliver several *times*
+ * better performance. Downside is that it has to allocate
+ * jumbo buffer to accomodate up to 8 records, but the
+ * compromise is considered worthy.
+ */
+ if (type==SSL3_RT_APPLICATION_DATA &&
+ len >= 4*(max_send_fragment=s->max_send_fragment) &&
+ s->compress==NULL && s->msg_callback==NULL &&
+ !SSL_USE_ETM(s) && SSL_USE_EXPLICIT_IV(s) &&
+ EVP_CIPHER_flags(s->enc_write_ctx->cipher)&EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK)
+ {
+ unsigned char aad[13];
+ EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM mb_param;
+ int packlen;
+
+ /* minimize address aliasing conflicts */
+ if ((max_send_fragment&0xffff) == 0)
+ max_send_fragment -= 512;
+
+ if (tot==0 || wb->buf==NULL) /* allocate jumbo buffer */
+ {
+ ssl3_release_write_buffer(s);
+
+ packlen = EVP_CIPHER_CTX_ctrl(s->enc_write_ctx,
+ EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE,
+ max_send_fragment,NULL);
+
+ if (len>=8*max_send_fragment) packlen *= 8;
+ else packlen *= 4;
+
+ wb->buf=OPENSSL_malloc(packlen);
+ wb->len=packlen;
+ }
+ else if (tot==len) /* done? */
+ {
+ OPENSSL_free(wb->buf); /* free jumbo buffer */
+ wb->buf = NULL;
+ return tot;
+ }
+
+ n=(len-tot);
+ for (;;)
+ {
+ if (n < 4*max_send_fragment)
+ {
+ OPENSSL_free(wb->buf); /* free jumbo buffer */
+ wb->buf = NULL;
+ break;
+ }
+
+ if (s->s3->alert_dispatch)
+ {
+ i=s->method->ssl_dispatch_alert(s);
+ if (i <= 0)
+ {
+ s->s3->wnum=tot;
+ return i;
+ }
+ }
+
+ if (n >= 8*max_send_fragment)
+ nw = max_send_fragment*(mb_param.interleave=8);
+ else
+ nw = max_send_fragment*(mb_param.interleave=4);
+
+ memcpy(aad,s->s3->write_sequence,8);
+ aad[8]=type;
+ aad[9]=(unsigned char)(s->version>>8);
+ aad[10]=(unsigned char)(s->version);
+ aad[11]=0;
+ aad[12]=0;
+ mb_param.out = NULL;
+ mb_param.inp = aad;
+ mb_param.len = nw;
+
+ packlen = EVP_CIPHER_CTX_ctrl(s->enc_write_ctx,
+ EVP_CTRL_TLS1_1_MULTIBLOCK_AAD,
+ sizeof(mb_param),&mb_param);
+
+ if (packlen<=0 || packlen>wb->len) /* never happens */
+ {
+ OPENSSL_free(wb->buf); /* free jumbo buffer */
+ wb->buf = NULL;
+ break;
+ }
+
+ mb_param.out = wb->buf;
+ mb_param.inp = &buf[tot];
+ mb_param.len = nw;
+
+ if (EVP_CIPHER_CTX_ctrl(s->enc_write_ctx,
+ EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT,
+ sizeof(mb_param),&mb_param)<=0)
+ return -1;
+
+ s->s3->write_sequence[7] += mb_param.interleave;
+ if (s->s3->write_sequence[7] < mb_param.interleave)
+ {
+ int j=6;
+ while (j>=0 && (++s->s3->write_sequence[j--])==0) ;
+ }
+
+ wb->offset = 0;
+ wb->left = packlen;
+
+ s->s3->wpend_tot = nw;
+ s->s3->wpend_buf = &buf[tot];
+ s->s3->wpend_type= type;
+ s->s3->wpend_ret = nw;
+
+ i = ssl3_write_pending(s,type,&buf[tot],nw);
+ if (i<=0)
+ {
+ if (i<0)
+ {
+ OPENSSL_free(wb->buf);
+ wb->buf = NULL;
+ }
+ s->s3->wnum=tot;
+ return i;
+ }
+ if (i==(int)n)
+ {
+ OPENSSL_free(wb->buf); /* free jumbo buffer */
+ wb->buf = NULL;
+ return tot+i;
+ }
+ n-=i;
+ tot+=i;
+ }
+ }
+ else
+#endif
+ if (tot==len) /* done? */
+ {
+ if (s->mode & SSL_MODE_RELEASE_BUFFERS &&
+ !SSL_IS_DTLS(s))
+ ssl3_release_write_buffer(s);
+
+ return tot;
+ }
+
n=(len-tot);
for (;;)
{
i=do_ssl3_write(s, type, &(buf[tot]), nw, 0);
if (i <= 0)
{
+ /* XXX should we ssl3_release_write_buffer if i<0? */
s->s3->wnum=tot;
return i;
}
/* next chunk of data should get another prepended empty fragment
* in ciphersuites with known-IV weakness: */
s->s3->empty_fragment_done = 0;
-
+
+ if ((i==(int)n) && s->mode & SSL_MODE_RELEASE_BUFFERS &&
+ !SSL_IS_DTLS(s))
+ ssl3_release_write_buffer(s);
+
return tot+i;
}
goto err;
}
+#if 0 && !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
+ if (type==SSL3_RT_APPLICATION_DATA && s->compress==NULL &&
+ !SSL_USE_ETM(s) && SSL_USE_EXPLICIT_IV(s) && /*!SSL_IS_DTLS(s) &&*/
+ EVP_CIPHER_flags(s->enc_write_ctx->cipher)&EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK)
+ do {
+ unsigned char aad[13];
+ EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM mb_param = {NULL,aad,sizeof(aad),0};
+ int packlen;
+
+ memcpy(aad,s->s3->write_sequence,8);
+ aad[8]=type;
+ aad[9]=(unsigned char)(s->version>>8);
+ aad[10]=(unsigned char)(s->version);
+ aad[11]=(unsigned char)(len>>8);
+ aad[12]=(unsigned char)len;
+ packlen = EVP_CIPHER_CTX_ctrl(s->enc_write_ctx,
+ EVP_CTRL_TLS1_1_MULTIBLOCK_AAD,
+ sizeof(mb_param),&mb_param);
+
+ if (packlen==0 || packlen > wb->len) break;
+
+ mb_param.out = wb->buf;
+ mb_param.inp = buf;
+ mb_param.len = len;
+ EVP_CIPHER_CTX_ctrl(s->enc_write_ctx,
+ EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT,
+ sizeof(mb_param),&mb_param);
+
+ s->s3->write_sequence[7] += mb_param.interleave;
+ if (s->s3->write_sequence[7] < mb_param.interleave)
+ {
+ int j=6;
+ while (j>=0 && (++s->s3->write_sequence[j--])==0) ;
+ }
+
+ wb->offset=0;
+ wb->left = packlen;
+
+ /* memorize arguments so that ssl3_write_pending can detect bad write retries later */
+ s->s3->wpend_tot=len;
+ s->s3->wpend_buf=buf;
+ s->s3->wpend_type=type;
+ s->s3->wpend_ret=len;
+
+ /* we now just need to write the buffer */
+ return ssl3_write_pending(s,type,buf,len);
+ } while (0);
+#endif
+
/* 'create_empty_fragment' is true only when this function calls itself */
if (!clear && !create_empty_fragment && !s->s3->empty_fragment_done)
{
* from wr->input. Length should be wr->length.
* wr->data still points in the wb->buf */
- if (mac_size != 0)
+ if (!SSL_USE_ETM(s) && mac_size != 0)
{
if (s->method->ssl3_enc->mac(s,&(p[wr->length + eivlen]),1) < 0)
goto err;
/* ssl3_enc can only have an error on read */
s->method->ssl3_enc->enc(s,1);
+ if (SSL_USE_ETM(s) && mac_size != 0)
+ {
+ if (s->method->ssl3_enc->mac(s,p + wr->length,1) < 0)
+ goto err;
+ wr->length+=mac_size;
+ }
+
/* record length after mac and block padding */
s2n(wr->length,plen);
{
wb->left=0;
wb->offset+=i;
- if (s->mode & SSL_MODE_RELEASE_BUFFERS &&
- !SSL_IS_DTLS(s))
- ssl3_release_write_buffer(s);
s->rwstate=SSL_NOTHING;
return(s->s3->wpend_ret);
}
slen=s->method->ssl3_enc->client_finished_label_len;
}
- s->s3->tmp.peer_finish_md_len = s->method->ssl3_enc->final_finish_mac(s,
+ i = s->method->ssl3_enc->final_finish_mac(s,
sender,slen,s->s3->tmp.peer_finish_md);
+ if (i == 0)
+ {
+ SSLerr(SSL_F_SSL3_DO_CHANGE_CIPHER_SPEC, ERR_R_INTERNAL_ERROR);
+ return 0;
+ }
+ s->s3->tmp.peer_finish_md_len = i;
return(1);
}
projects / openssl.git / blobdiff