* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
+ * Copyright (C) 2012 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
* Copyright (C) 2010 - 2011, Hoi-Ho Chan, <hoiho.chan@gmail.com>
- * Copyright (C) 2012 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
- * are also available at http://curl.haxx.se/docs/copyright.html.
+ * are also available at https://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
#include <polarssl/certs.h>
#include <polarssl/x509.h>
#include <polarssl/version.h>
+#include <polarssl/sha256.h>
#if POLARSSL_VERSION_NUMBER < 0x01030000
#error too old PolarSSL
#include "select.h"
#include "rawstr.h"
#include "polarssl_threadlock.h"
-
-#define _MPRINTF_REPLACE /* use our functions only */
-#include <curl/mprintf.h>
+#include "curl_printf.h"
#include "curl_memory.h"
/* The last #include file should be: */
#include "memdebug.h"
+/* See https://tls.mbed.org/discussions/generic/
+ howto-determine-exact-buffer-len-for-mbedtls_pk_write_pubkey_der
+*/
+#define RSA_PUB_DER_MAX_BYTES (38 + 2 * POLARSSL_MPI_MAX_SIZE)
+#define ECP_PUB_DER_MAX_BYTES (30 + 2 * POLARSSL_ECP_MAX_BYTES)
+
+#define PUB_DER_MAX_BYTES (RSA_PUB_DER_MAX_BYTES > ECP_PUB_DER_MAX_BYTES ? \
+ RSA_PUB_DER_MAX_BYTES : ECP_PUB_DER_MAX_BYTES)
+
/* apply threading? */
#if defined(USE_THREADS_POSIX) || defined(USE_THREADS_WIN32)
#define THREADING_SUPPORT
static void entropy_init_mutex(entropy_context *ctx)
{
/* lock 0 = entropy_init_mutex() */
- polarsslthreadlock_lock_function(0);
+ Curl_polarsslthreadlock_lock_function(0);
if(entropy_init_initialized == 0) {
entropy_init(ctx);
entropy_init_initialized = 1;
}
- polarsslthreadlock_unlock_function(0);
+ Curl_polarsslthreadlock_unlock_function(0);
}
/* end of entropy_init_mutex() */
{
int ret;
/* lock 1 = entropy_func_mutex() */
- polarsslthreadlock_lock_function(1);
+ Curl_polarsslthreadlock_lock_function(1);
ret = entropy_func(data, output, len);
- polarsslthreadlock_unlock_function(1);
+ Curl_polarsslthreadlock_unlock_function(1);
return ret;
}
#ifdef POLARSSL_DEBUG
static void polarssl_debug(void *context, int level, const char *line)
{
- struct SessionHandle *data = NULL;
+ struct Curl_easy *data = NULL;
if(!context)
return;
- data = (struct SessionHandle *)context;
+ data = (struct Curl_easy *)context;
infof(data, "%s", line);
(void) level;
#endif
/* ALPN for http2? */
-#ifdef USE_NGHTTP2
-# undef HAS_ALPN
-# ifdef POLARSSL_SSL_ALPN
-# define HAS_ALPN
-# endif
+#ifdef POLARSSL_SSL_ALPN
+# define HAS_ALPN
#endif
static Curl_recv polarssl_recv;
polarssl_connect_step1(struct connectdata *conn,
int sockindex)
{
- struct SessionHandle *data = conn->data;
+ struct Curl_easy *data = conn->data;
struct ssl_connect_data* connssl = &conn->ssl[sockindex];
bool sni = TRUE; /* default is SNI enabled */
#else
struct in_addr addr;
#endif
- void *old_session = NULL;
- size_t old_session_size = 0;
char errorbuf[128];
errorbuf[0]=0;
entropy_init_mutex(&entropy);
if((ret = ctr_drbg_init(&connssl->ctr_drbg, entropy_func_mutex, &entropy,
- connssl->ssn.id, connssl->ssn.length)) != 0) {
+ NULL, 0)) != 0) {
#ifdef POLARSSL_ERROR_C
error_strerror(ret, errorbuf, sizeof(errorbuf));
#endif /* POLARSSL_ERROR_C */
entropy_init(&connssl->entropy);
if((ret = ctr_drbg_init(&connssl->ctr_drbg, entropy_func, &connssl->entropy,
- connssl->ssn.id, connssl->ssn.length)) != 0) {
+ NULL, 0)) != 0) {
#ifdef POLARSSL_ERROR_C
error_strerror(ret, errorbuf, sizeof(errorbuf));
#endif /* POLARSSL_ERROR_C */
switch(data->set.ssl.version) {
default:
case CURL_SSLVERSION_DEFAULT:
+ case CURL_SSLVERSION_TLSv1:
ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
SSL_MINOR_VERSION_1);
break;
case CURL_SSLVERSION_SSLv3:
ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
SSL_MINOR_VERSION_0);
+ ssl_set_max_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
+ SSL_MINOR_VERSION_0);
infof(data, "PolarSSL: Forced min. SSL Version to be SSLv3\n");
break;
case CURL_SSLVERSION_TLSv1_0:
ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
SSL_MINOR_VERSION_1);
+ ssl_set_max_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
+ SSL_MINOR_VERSION_1);
infof(data, "PolarSSL: Forced min. SSL Version to be TLS 1.0\n");
break;
case CURL_SSLVERSION_TLSv1_1:
ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
SSL_MINOR_VERSION_2);
+ ssl_set_max_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
+ SSL_MINOR_VERSION_2);
infof(data, "PolarSSL: Forced min. SSL Version to be TLS 1.1\n");
break;
case CURL_SSLVERSION_TLSv1_2:
ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
SSL_MINOR_VERSION_3);
+ ssl_set_max_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
+ SSL_MINOR_VERSION_3);
infof(data, "PolarSSL: Forced min. SSL Version to be TLS 1.2\n");
break;
}
net_send, &conn->sock[sockindex]);
ssl_set_ciphersuites(&connssl->ssl, ssl_list_ciphersuites());
- if(!Curl_ssl_getsessionid(conn, &old_session, &old_session_size)) {
- memcpy(&connssl->ssn, old_session, old_session_size);
- infof(data, "PolarSSL re-using session\n");
- }
- ssl_set_session(&connssl->ssl,
- &connssl->ssn);
+ /* Check if there's a cached ID we can/should use here! */
+ if(conn->ssl_config.sessionid) {
+ void *old_session = NULL;
+
+ Curl_ssl_sessionid_lock(conn);
+ if(!Curl_ssl_getsessionid(conn, &old_session, NULL)) {
+ ret = ssl_set_session(&connssl->ssl, old_session);
+ Curl_ssl_sessionid_unlock(conn);
+ if(ret) {
+ failf(data, "ssl_set_session returned -0x%x", -ret);
+ return CURLE_SSL_CONNECT_ERROR;
+ }
+ infof(data, "PolarSSL re-using session\n");
+ }
+ }
ssl_set_ca_chain(&connssl->ssl,
&connssl->cacert,
ssl_set_own_cert_rsa(&connssl->ssl,
&connssl->clicert, &connssl->rsa);
- if(!Curl_inet_pton(AF_INET, conn->host.name, &addr) &&
-#ifdef ENABLE_IPV6
- !Curl_inet_pton(AF_INET6, conn->host.name, &addr) &&
-#endif
- sni && ssl_set_hostname(&connssl->ssl, conn->host.name)) {
- infof(data, "WARNING: failed to configure "
- "server name indication (SNI) TLS extension\n");
+ if(ssl_set_hostname(&connssl->ssl, conn->host.name)) {
+ /* ssl_set_hostname() sets the name to use in CN/SAN checks *and* the name
+ to set in the SNI extension. So even if curl connects to a host
+ specified as an IP address, this function must be used. */
+ failf(data, "couldn't set hostname in PolarSSL");
+ return CURLE_SSL_CONNECT_ERROR;
}
#ifdef HAS_ALPN
- if(data->set.httpversion == CURL_HTTP_VERSION_2_0) {
- if(data->set.ssl_enable_alpn) {
- static const char* protocols[] = {
- NGHTTP2_PROTO_VERSION_ID, ALPN_HTTP_1_1, NULL
- };
- ssl_set_alpn_protocols(&connssl->ssl, protocols);
- infof(data, "ALPN, offering %s, %s\n", protocols[0],
- protocols[1]);
- connssl->asked_for_h2 = TRUE;
+ if(conn->bits.tls_enable_alpn) {
+ static const char* protocols[3];
+ int cur = 0;
+
+#ifdef USE_NGHTTP2
+ if(data->set.httpversion >= CURL_HTTP_VERSION_2) {
+ protocols[cur++] = NGHTTP2_PROTO_VERSION_ID;
+ infof(data, "ALPN, offering %s\n", NGHTTP2_PROTO_VERSION_ID);
}
+#endif
+
+ protocols[cur++] = ALPN_HTTP_1_1;
+ infof(data, "ALPN, offering %s\n", ALPN_HTTP_1_1);
+
+ protocols[cur] = NULL;
+
+ ssl_set_alpn_protocols(&connssl->ssl, protocols);
}
#endif
int sockindex)
{
int ret;
- struct SessionHandle *data = conn->data;
+ struct Curl_easy *data = conn->data;
struct ssl_connect_data* connssl = &conn->ssl[sockindex];
char buffer[1024];
-#ifdef HAS_ALPN
- const char* next_protocol;
-#endif
-
char errorbuf[128];
errorbuf[0] = 0;
conn->recv[sockindex] = polarssl_recv;
conn->send[sockindex] = polarssl_send;
- for(;;) {
- if(!(ret = ssl_handshake(&connssl->ssl)))
- break;
- else if(ret != POLARSSL_ERR_NET_WANT_READ &&
- ret != POLARSSL_ERR_NET_WANT_WRITE) {
-#ifdef POLARSSL_ERROR_C
- error_strerror(ret, errorbuf, sizeof(errorbuf));
-#endif /* POLARSSL_ERROR_C */
- failf(data, "ssl_handshake returned - PolarSSL: (-0x%04X) %s",
- -ret, errorbuf);
+ ret = ssl_handshake(&connssl->ssl);
- return CURLE_SSL_CONNECT_ERROR;
- }
- else {
- if(ret == POLARSSL_ERR_NET_WANT_READ) {
- connssl->connecting_state = ssl_connect_2_reading;
- return CURLE_OK;
- }
- if(ret == POLARSSL_ERR_NET_WANT_WRITE) {
- connssl->connecting_state = ssl_connect_2_writing;
- return CURLE_OK;
- }
- failf(data, "SSL_connect failed with error %d.", ret);
- return CURLE_SSL_CONNECT_ERROR;
+ switch(ret) {
+ case 0:
+ break;
- }
+ case POLARSSL_ERR_NET_WANT_READ:
+ connssl->connecting_state = ssl_connect_2_reading;
+ return CURLE_OK;
+
+ case POLARSSL_ERR_NET_WANT_WRITE:
+ connssl->connecting_state = ssl_connect_2_writing;
+ return CURLE_OK;
+
+ default:
+#ifdef POLARSSL_ERROR_C
+ error_strerror(ret, errorbuf, sizeof(errorbuf));
+#endif /* POLARSSL_ERROR_C */
+ failf(data, "ssl_handshake returned - PolarSSL: (-0x%04X) %s",
+ -ret, errorbuf);
+ return CURLE_SSL_CONNECT_ERROR;
}
infof(data, "PolarSSL: Handshake complete, cipher is %s\n",
- ssl_get_ciphersuite(&conn->ssl[sockindex].ssl)
- );
+ ssl_get_ciphersuite(&conn->ssl[sockindex].ssl) );
ret = ssl_get_verify_result(&conn->ssl[sockindex].ssl);
infof(data, "Dumping cert info:\n%s\n", buffer);
}
+ /* adapted from mbedtls.c */
+ if(data->set.str[STRING_SSL_PINNEDPUBLICKEY]) {
+ int size;
+ CURLcode result;
+ x509_crt *p;
+ unsigned char pubkey[PUB_DER_MAX_BYTES];
+ const x509_crt *peercert;
+
+ peercert = ssl_get_peer_cert(&connssl->ssl);
+
+ if(!peercert || !peercert->raw.p || !peercert->raw.len) {
+ failf(data, "Failed due to missing peer certificate");
+ return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
+ }
+
+ p = calloc(1, sizeof(*p));
+
+ if(!p)
+ return CURLE_OUT_OF_MEMORY;
+
+ x509_crt_init(p);
+
+ /* Make a copy of our const peercert because pk_write_pubkey_der
+ needs a non-const key, for now.
+ https://github.com/ARMmbed/mbedtls/issues/396 */
+ if(x509_crt_parse_der(p, peercert->raw.p, peercert->raw.len)) {
+ failf(data, "Failed copying peer certificate");
+ x509_crt_free(p);
+ free(p);
+ return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
+ }
+
+ size = pk_write_pubkey_der(&p->pk, pubkey, PUB_DER_MAX_BYTES);
+
+ if(size <= 0) {
+ failf(data, "Failed copying public key from peer certificate");
+ x509_crt_free(p);
+ free(p);
+ return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
+ }
+
+ /* pk_write_pubkey_der writes data at the end of the buffer. */
+ result = Curl_pin_peer_pubkey(data,
+ data->set.str[STRING_SSL_PINNEDPUBLICKEY],
+ &pubkey[PUB_DER_MAX_BYTES - size], size);
+ if(result) {
+ x509_crt_free(p);
+ free(p);
+ return result;
+ }
+
+ x509_crt_free(p);
+ free(p);
+ }
+
#ifdef HAS_ALPN
- if(data->set.ssl_enable_alpn) {
- next_protocol = ssl_get_alpn_protocol(&connssl->ssl);
+ if(conn->bits.tls_enable_alpn) {
+ const char *next_protocol = ssl_get_alpn_protocol(&connssl->ssl);
if(next_protocol != NULL) {
infof(data, "ALPN, server accepted to use %s\n", next_protocol);
- if(strncmp(next_protocol, NGHTTP2_PROTO_VERSION_ID,
+#ifdef USE_NGHTTP2
+ if(!strncmp(next_protocol, NGHTTP2_PROTO_VERSION_ID,
NGHTTP2_PROTO_VERSION_ID_LEN)) {
- conn->negnpn = NPN_HTTP2;
+ conn->negnpn = CURL_HTTP_VERSION_2;
}
- else if(strncmp(next_protocol, ALPN_HTTP_1_1, ALPN_HTTP_1_1_LENGTH)) {
- conn->negnpn = NPN_HTTP1_1;
+ else
+#endif
+ if(!strncmp(next_protocol, ALPN_HTTP_1_1, ALPN_HTTP_1_1_LENGTH)) {
+ conn->negnpn = CURL_HTTP_VERSION_1_1;
}
}
- else if(connssl->asked_for_h2) {
+ else
infof(data, "ALPN, server did not agree to a protocol\n");
- }
}
#endif
polarssl_connect_step3(struct connectdata *conn,
int sockindex)
{
- CURLcode result = CURLE_OK;
+ CURLcode retcode = CURLE_OK;
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
- struct SessionHandle *data = conn->data;
- void *old_ssl_sessionid = NULL;
- ssl_session *our_ssl_sessionid = &conn->ssl[sockindex].ssn ;
- bool incache;
+ struct Curl_easy *data = conn->data;
DEBUGASSERT(ssl_connect_3 == connssl->connecting_state);
- /* Save the current session data for possible re-use */
- incache = !(Curl_ssl_getsessionid(conn, &old_ssl_sessionid, NULL));
- if(incache) {
- if(old_ssl_sessionid != our_ssl_sessionid) {
- infof(data, "old SSL session ID is stale, removing\n");
- Curl_ssl_delsessionid(conn, old_ssl_sessionid);
- incache = FALSE;
- }
- }
+ if(conn->ssl_config.sessionid) {
+ int ret;
+ ssl_session *our_ssl_sessionid;
+ void *old_ssl_sessionid = NULL;
- if(!incache) {
- void *new_session = malloc(sizeof(ssl_session));
+ our_ssl_sessionid = malloc(sizeof(ssl_session));
+ if(!our_ssl_sessionid)
+ return CURLE_OUT_OF_MEMORY;
- if(new_session) {
- memcpy(new_session, our_ssl_sessionid, sizeof(ssl_session));
+ ssl_session_init(our_ssl_sessionid);
- result = Curl_ssl_addsessionid(conn, new_session, sizeof(ssl_session));
+ ret = ssl_get_session(&connssl->ssl, our_ssl_sessionid);
+ if(ret) {
+ failf(data, "ssl_get_session returned -0x%x", -ret);
+ return CURLE_SSL_CONNECT_ERROR;
}
- else
- result = CURLE_OUT_OF_MEMORY;
- if(result) {
+ /* If there's already a matching session in the cache, delete it */
+ Curl_ssl_sessionid_lock(conn);
+ if(!Curl_ssl_getsessionid(conn, &old_ssl_sessionid, NULL))
+ Curl_ssl_delsessionid(conn, old_ssl_sessionid);
+
+ retcode = Curl_ssl_addsessionid(conn, our_ssl_sessionid, 0);
+ Curl_ssl_sessionid_unlock(conn);
+ if(retcode) {
+ free(our_ssl_sessionid);
failf(data, "failed to store ssl session");
- return result;
+ return retcode;
}
}
return ret;
}
-void Curl_polarssl_close_all(struct SessionHandle *data)
-{
- (void)data;
-}
-
void Curl_polarssl_close(struct connectdata *conn, int sockindex)
{
rsa_free(&conn->ssl[sockindex].rsa);
void Curl_polarssl_session_free(void *ptr)
{
+ ssl_session_free(ptr);
free(ptr);
}
+/* 1.3.10 was the first rebranded version. All new releases (in 1.3 branch and
+ higher) will be mbed TLS branded.. */
+
size_t Curl_polarssl_version(char *buffer, size_t size)
{
unsigned int version = version_get_number();
- return snprintf(buffer, size, "PolarSSL/%d.%d.%d", version>>24,
- (version>>16)&0xff, (version>>8)&0xff);
+ return snprintf(buffer, size, "%s/%d.%d.%d",
+ version >= 0x01030A00?"mbedTLS":"PolarSSL",
+ version>>24, (version>>16)&0xff, (version>>8)&0xff);
}
static CURLcode
bool *done)
{
CURLcode result;
- struct SessionHandle *data = conn->data;
+ struct Curl_easy *data = conn->data;
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
curl_socket_t sockfd = conn->sock[sockindex];
long timeout_ms;
* return 0 error initializing SSL
* return 1 SSL initialized successfully
*/
-int polarssl_init(void)
+int Curl_polarssl_init(void)
{
- return polarsslthreadlock_thread_setup();
+ return Curl_polarsslthreadlock_thread_setup();
}
-void polarssl_cleanup(void)
+void Curl_polarssl_cleanup(void)
{
- (void)polarsslthreadlock_thread_cleanup();
+ (void)Curl_polarsslthreadlock_thread_cleanup();
}
#endif /* USE_POLARSSL */
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