/*
- * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
* Copyright 2005 Nokia. All rights reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
#include <openssl/rand.h>
#include <openssl/ocsp.h>
#include <openssl/bn.h>
+#include <openssl/trace.h>
#include <openssl/async.h>
#ifndef OPENSSL_NO_SRP
# include <openssl/srp.h>
#endif
static int ldap_ExtendedResponse_parse(const char *buf, long rem);
static char *base64encode (const void *buf, size_t len);
+static int is_dNS_name(const char *host);
static int saved_errno;
#endif
OPT_DANE_TLSA_RRDATA, OPT_DANE_EE_NO_NAME,
OPT_ENABLE_PHA,
+ OPT_SCTP_LABEL_BUG,
OPT_R_ENUM
} OPTION_CHOICE;
#endif
#ifndef OPENSSL_NO_SCTP
{"sctp", OPT_SCTP, '-', "Use SCTP"},
+ {"sctp_label_bug", OPT_SCTP_LABEL_BUG, '-', "Enable SCTP label length bug"},
#endif
#ifndef OPENSSL_NO_SSL_TRACE
{"trace", OPT_TRACE, '-', "Show trace output of protocol messages"},
#endif
char *psksessf = NULL;
int enable_pha = 0;
+#ifndef OPENSSL_NO_SCTP
+ int sctp_label_bug = 0;
+#endif
FD_ZERO(&readfds);
FD_ZERO(&writefds);
goto opthelp;
break;
case OPT_VERIFY_RET_ERROR:
+ verify = SSL_VERIFY_PEER;
verify_args.return_error = 1;
break;
case OPT_VERIFY_QUIET:
case OPT_SCTP:
#ifndef OPENSSL_NO_SCTP
protocol = IPPROTO_SCTP;
+#endif
+ break;
+ case OPT_SCTP_LABEL_BUG:
+#ifndef OPENSSL_NO_SCTP
+ sctp_label_bug = 1;
#endif
break;
case OPT_TIMEOUT:
break;
}
}
+
if (count4or6 >= 2) {
BIO_printf(bio_err, "%s: Can't use both -4 and -6\n", prog);
goto opthelp;
}
}
+#ifndef OPENSSL_NO_SCTP
+ if (protocol == IPPROTO_SCTP && sctp_label_bug == 1)
+ SSL_CTX_set_mode(ctx, SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG);
+#endif
+
if (min_version != 0
&& SSL_CTX_set_min_proto_version(ctx, min_version) == 0)
goto end;
SSL_set_mode(con, SSL_MODE_SEND_FALLBACK_SCSV);
if (!noservername && (servername != NULL || dane_tlsa_domain == NULL)) {
- if (servername == NULL)
- servername = (host == NULL) ? "localhost" : host;
- if (!SSL_set_tlsext_host_name(con, servername)) {
+ if (servername == NULL) {
+ if(host == NULL || is_dNS_name(host))
+ servername = (host == NULL) ? "localhost" : host;
+ }
+ if (servername != NULL && !SSL_set_tlsext_host_name(con, servername)) {
BIO_printf(bio_err, "Unable to set TLS servername extension.\n");
ERR_print_errors(bio_err);
goto end;
BIO_push(fbio, sbio);
BIO_printf(fbio, "CONNECT %s HTTP/1.0\r\n", connectstr);
- /*
+ /*
* Workaround for broken proxies which would otherwise close
* the connection when entering tunnel mode (eg Squid 2.6)
*/
if (proxypass != NULL)
l += strlen(proxypass);
proxyauth = app_malloc(l + 2, "Proxy auth string");
- snprintf(proxyauth, l + 2, "%s:%s", proxyuser, (proxypass != NULL) ? proxypass : "");
+ BIO_snprintf(proxyauth, l + 2, "%s:%s", proxyuser,
+ (proxypass != NULL) ? proxypass : "");
proxyauthenc = base64encode(proxyauth, strlen(proxyauth));
- BIO_printf(fbio, "Proxy-Authorization: Basic %s\r\n", proxyauthenc);
+ BIO_printf(fbio, "Proxy-Authorization: Basic %s\r\n",
+ proxyauthenc);
OPENSSL_clear_free(proxyauth, strlen(proxyauth));
OPENSSL_clear_free(proxyauthenc, strlen(proxyauthenc));
}
BIO_printf(bio_err, "RENEGOTIATING\n");
SSL_renegotiate(con);
cbuf_len = 0;
- }
-
- if (!c_ign_eof && (cbuf[0] == 'K' || cbuf[0] == 'k' )
+ } else if (!c_ign_eof && (cbuf[0] == 'K' || cbuf[0] == 'k' )
&& cmdletters) {
BIO_printf(bio_err, "KEYUPDATE\n");
SSL_key_update(con,
BIO_printf(bio_err, "Using Kernel TLS for sending\n");
#endif
-#ifdef SSL_DEBUG
- {
+ if (OSSL_TRACE_ENABLED(TLS)) {
/* Print out local port of connection: useful for debugging */
int sock;
union BIO_sock_info_u info;
}
BIO_ADDR_free(info.addr);
}
-#endif
#if !defined(OPENSSL_NO_NEXTPROTONEG)
if (next_proto.status != -1) {
i = EVP_EncodeBlock((unsigned char *)out, buf, len);
assert(i <= (int)outl);
if (i < 0)
- *out = '\0';
+ *out = '\0';
return out;
}
+/*
+ * Host dNS Name verifier: used for checking that the hostname is in dNS format
+ * before setting it as SNI
+ */
+static int is_dNS_name(const char *host)
+{
+ const size_t MAX_LABEL_LENGTH = 63;
+ size_t i;
+ int isdnsname = 0;
+ size_t length = strlen(host);
+ size_t label_length = 0;
+ int all_numeric = 1;
+
+ /*
+ * Deviation from strict DNS name syntax, also check names with '_'
+ * Check DNS name syntax, any '-' or '.' must be internal,
+ * and on either side of each '.' we can't have a '-' or '.'.
+ *
+ * If the name has just one label, we don't consider it a DNS name.
+ */
+ for (i = 0; i < length && label_length < MAX_LABEL_LENGTH; ++i) {
+ char c = host[i];
+
+ if ((c >= 'a' && c <= 'z')
+ || (c >= 'A' && c <= 'Z')
+ || c == '_') {
+ label_length += 1;
+ all_numeric = 0;
+ continue;
+ }
+
+ if (c >= '0' && c <= '9') {
+ label_length += 1;
+ continue;
+ }
+
+ /* Dot and hyphen cannot be first or last. */
+ if (i > 0 && i < length - 1) {
+ if (c == '-') {
+ label_length += 1;
+ continue;
+ }
+ /*
+ * Next to a dot the preceding and following characters must not be
+ * another dot or a hyphen. Otherwise, record that the name is
+ * plausible, since it has two or more labels.
+ */
+ if (c == '.'
+ && host[i + 1] != '.'
+ && host[i - 1] != '-'
+ && host[i + 1] != '-') {
+ label_length = 0;
+ isdnsname = 1;
+ continue;
+ }
+ }
+ isdnsname = 0;
+ break;
+ }
+
+ /* dNS name must not be all numeric and labels must be shorter than 64 characters. */
+ isdnsname &= !all_numeric && !(label_length == MAX_LABEL_LENGTH);
+
+ return isdnsname;
+}
#endif /* OPENSSL_NO_SOCK */
projects / openssl.git / blobdiff