#ifndef OPENSSL_NO_SHA
tlsext_sigalg(TLSEXT_hash_sha1)
#endif
-#ifndef OPENSSL_NO_MD5
- tlsext_sigalg_rsa(TLSEXT_hash_md5)
-#endif
};
int tls12_get_req_sig_algs(SSL *s, unsigned char *p)
{
size_t slen = sizeof(tls12_sigalgs);
-#ifdef OPENSSL_FIPS
- /* If FIPS mode don't include MD5 which is last */
- if (FIPS_mode())
- slen -= 2;
-#endif
if (p)
memcpy(p, tls12_sigalgs, slen);
return (int)slen;
}
#endif
+#ifndef OPENSSL_NO_SRTP
if(SSL_get_srtp_profiles(s))
{
int el;
}
ret += el;
}
+#endif
+
+#ifdef TLSEXT_TYPE_padding
+ /* Add padding to workaround bugs in F5 terminators.
+ * See https://tools.ietf.org/html/draft-agl-tls-padding-02
+ *
+ * NB: because this code works out the length of all existing
+ * extensions it MUST always appear last.
+ */
+ {
+ int hlen = ret - (unsigned char *)s->init_buf->data;
+ /* The code in s23_clnt.c to build ClientHello messages includes the
+ * 5-byte record header in the buffer, while the code in s3_clnt.c does
+ * not. */
+ if (s->state == SSL23_ST_CW_CLNT_HELLO_A)
+ hlen -= 5;
+ if (hlen > 0xff && hlen < 0x200)
+ {
+ hlen = 0x200 - hlen;
+ if (hlen >= 4)
+ hlen -= 4;
+ else
+ hlen = 0;
+
+ s2n(TLSEXT_TYPE_padding, ret);
+ s2n(hlen, ret);
+ memset(ret, 0, hlen);
+ ret += hlen;
+ }
+ }
+#endif
if ((extdatalen = ret-p-2)== 0)
return p;
}
#endif
+#ifndef OPENSSL_NO_SRTP
if(s->srtp_profile)
{
int el;
}
ret+=el;
}
+#endif
if (((s->s3->tmp.new_cipher->id & 0xFFFF)==0x80 || (s->s3->tmp.new_cipher->id & 0xFFFF)==0x81)
&& (SSL_get_options(s) & SSL_OP_CRYPTOPRO_TLSEXT_BUG))
return ret;
}
+#ifndef OPENSSL_NO_EC
+/* ssl_check_for_safari attempts to fingerprint Safari using OS X
+ * SecureTransport using the TLS extension block in |d|, of length |n|.
+ * Safari, since 10.6, sends exactly these extensions, in this order:
+ * SNI,
+ * elliptic_curves
+ * ec_point_formats
+ *
+ * We wish to fingerprint Safari because they broke ECDHE-ECDSA support in 10.8,
+ * but they advertise support. So enabling ECDHE-ECDSA ciphers breaks them.
+ * Sadly we cannot differentiate 10.6, 10.7 and 10.8.4 (which work), from
+ * 10.8..10.8.3 (which don't work).
+ */
+static void ssl_check_for_safari(SSL *s, const unsigned char *data, const unsigned char *d, int n) {
+ unsigned short type, size;
+ static const unsigned char kSafariExtensionsBlock[] = {
+ 0x00, 0x0a, /* elliptic_curves extension */
+ 0x00, 0x08, /* 8 bytes */
+ 0x00, 0x06, /* 6 bytes of curve ids */
+ 0x00, 0x17, /* P-256 */
+ 0x00, 0x18, /* P-384 */
+ 0x00, 0x19, /* P-521 */
+
+ 0x00, 0x0b, /* ec_point_formats */
+ 0x00, 0x02, /* 2 bytes */
+ 0x01, /* 1 point format */
+ 0x00, /* uncompressed */
+ };
+
+ /* The following is only present in TLS 1.2 */
+ static const unsigned char kSafariTLS12ExtensionsBlock[] = {
+ 0x00, 0x0d, /* signature_algorithms */
+ 0x00, 0x0c, /* 12 bytes */
+ 0x00, 0x0a, /* 10 bytes */
+ 0x05, 0x01, /* SHA-384/RSA */
+ 0x04, 0x01, /* SHA-256/RSA */
+ 0x02, 0x01, /* SHA-1/RSA */
+ 0x04, 0x03, /* SHA-256/ECDSA */
+ 0x02, 0x03, /* SHA-1/ECDSA */
+ };
+
+ if (data >= (d+n-2))
+ return;
+ data += 2;
+
+ if (data > (d+n-4))
+ return;
+ n2s(data,type);
+ n2s(data,size);
+
+ if (type != TLSEXT_TYPE_server_name)
+ return;
+
+ if (data+size > d+n)
+ return;
+ data += size;
+
+ if (TLS1_get_client_version(s) >= TLS1_2_VERSION)
+ {
+ const size_t len1 = sizeof(kSafariExtensionsBlock);
+ const size_t len2 = sizeof(kSafariTLS12ExtensionsBlock);
+
+ if (data + len1 + len2 != d+n)
+ return;
+ if (memcmp(data, kSafariExtensionsBlock, len1) != 0)
+ return;
+ if (memcmp(data + len1, kSafariTLS12ExtensionsBlock, len2) != 0)
+ return;
+ }
+ else
+ {
+ const size_t len = sizeof(kSafariExtensionsBlock);
+
+ if (data + len != d+n)
+ return;
+ if (memcmp(data, kSafariExtensionsBlock, len) != 0)
+ return;
+ }
+
+ s->s3->is_probably_safari = 1;
+}
+#endif /* !OPENSSL_NO_EC */
+
int ssl_parse_clienthello_tlsext(SSL *s, unsigned char **p, unsigned char *d, int n, int *al)
{
unsigned short type;
SSL_TLSEXT_HB_DONT_SEND_REQUESTS);
#endif
+#ifndef OPENSSL_NO_EC
+ if (s->options & SSL_OP_SAFARI_ECDHE_ECDSA_BUG)
+ ssl_check_for_safari(s, data, d, n);
+#endif /* !OPENSSL_NO_EC */
+
if (data >= (d+n-2))
goto ri_check;
n2s(data,len);
}
}
else if (type == TLSEXT_TYPE_status_request &&
- s->version != DTLS1_VERSION && s->ctx->tlsext_status_cb)
+ s->version != DTLS1_VERSION)
{
if (size < 5)
#endif
/* session ticket processed earlier */
+#ifndef OPENSSL_NO_SRTP
else if (type == TLSEXT_TYPE_use_srtp)
- {
+ {
if(ssl_parse_clienthello_use_srtp_ext(s, data, size,
al))
return 0;
- }
+ }
+#endif
data+=size;
}
unsigned char selected_len;
/* We must have requested it. */
- if ((s->ctx->next_proto_select_cb == NULL))
+ if (s->ctx->next_proto_select_cb == NULL)
{
*al = TLS1_AD_UNSUPPORTED_EXTENSION;
return 0;
}
}
#endif
+#ifndef OPENSSL_NO_SRTP
else if (type == TLSEXT_TYPE_use_srtp)
- {
+ {
if(ssl_parse_serverhello_use_srtp_ext(s, data, size,
al))
return 0;
- }
+ }
+#endif
data+=size;
}
{
switch(hash_alg)
{
-#ifndef OPENSSL_NO_MD5
- case TLSEXT_hash_md5:
-#ifdef OPENSSL_FIPS
- if (FIPS_mode())
- return NULL;
-#endif
- return EVP_md5();
-#endif
#ifndef OPENSSL_NO_SHA
case TLSEXT_hash_sha1:
return EVP_sha1();
projects / openssl.git / blobdiff