mirror of
https://github.com/moparisthebest/curl
synced 2024-10-31 15:45:12 -04:00
8aee8a6a2d
On OS/400, `close' is an ASCII system macro that corrupts the code if not used in a context not targetting the close() system API.
938 lines
27 KiB
C
938 lines
27 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 2012 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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* Copyright (C) 2010 - 2011, Hoi-Ho Chan, <hoiho.chan@gmail.com>
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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/*
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* Source file for all PolarSSL-specific code for the TLS/SSL layer. No code
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* but vtls.c should ever call or use these functions.
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*
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*/
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#include "curl_setup.h"
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#ifdef USE_POLARSSL
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#include <polarssl/net.h>
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#include <polarssl/ssl.h>
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#include <polarssl/certs.h>
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#include <polarssl/x509.h>
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#include <polarssl/version.h>
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#include <polarssl/sha256.h>
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#if POLARSSL_VERSION_NUMBER < 0x01030000
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#error too old PolarSSL
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#endif
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#include <polarssl/error.h>
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#include <polarssl/entropy.h>
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#include <polarssl/ctr_drbg.h>
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#include "urldata.h"
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#include "sendf.h"
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#include "inet_pton.h"
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#include "polarssl.h"
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#include "vtls.h"
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#include "parsedate.h"
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#include "connect.h" /* for the connect timeout */
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#include "select.h"
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#include "strcase.h"
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#include "polarssl_threadlock.h"
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#include "curl_printf.h"
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#include "curl_memory.h"
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/* The last #include file should be: */
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#include "memdebug.h"
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/* See https://tls.mbed.org/discussions/generic/
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howto-determine-exact-buffer-len-for-mbedtls_pk_write_pubkey_der
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*/
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#define RSA_PUB_DER_MAX_BYTES (38 + 2 * POLARSSL_MPI_MAX_SIZE)
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#define ECP_PUB_DER_MAX_BYTES (30 + 2 * POLARSSL_ECP_MAX_BYTES)
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#define PUB_DER_MAX_BYTES (RSA_PUB_DER_MAX_BYTES > ECP_PUB_DER_MAX_BYTES ? \
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RSA_PUB_DER_MAX_BYTES : ECP_PUB_DER_MAX_BYTES)
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struct ssl_backend_data {
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ctr_drbg_context ctr_drbg;
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entropy_context entropy;
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ssl_context ssl;
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int server_fd;
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x509_crt cacert;
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x509_crt clicert;
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x509_crl crl;
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rsa_context rsa;
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};
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#define BACKEND connssl->backend
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/* apply threading? */
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#if defined(USE_THREADS_POSIX) || defined(USE_THREADS_WIN32)
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#define THREADING_SUPPORT
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#endif
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#ifndef POLARSSL_ERROR_C
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#define error_strerror(x,y,z)
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#endif /* POLARSSL_ERROR_C */
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#if defined(THREADING_SUPPORT)
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static entropy_context entropy;
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static int entropy_init_initialized = 0;
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/* start of entropy_init_mutex() */
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static void entropy_init_mutex(entropy_context *ctx)
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{
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/* lock 0 = entropy_init_mutex() */
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Curl_polarsslthreadlock_lock_function(0);
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if(entropy_init_initialized == 0) {
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entropy_init(ctx);
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entropy_init_initialized = 1;
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}
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Curl_polarsslthreadlock_unlock_function(0);
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}
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/* end of entropy_init_mutex() */
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/* start of entropy_func_mutex() */
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static int entropy_func_mutex(void *data, unsigned char *output, size_t len)
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{
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int ret;
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/* lock 1 = entropy_func_mutex() */
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Curl_polarsslthreadlock_lock_function(1);
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ret = entropy_func(data, output, len);
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Curl_polarsslthreadlock_unlock_function(1);
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return ret;
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}
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/* end of entropy_func_mutex() */
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#endif /* THREADING_SUPPORT */
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/* Define this to enable lots of debugging for PolarSSL */
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#undef POLARSSL_DEBUG
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#ifdef POLARSSL_DEBUG
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static void polarssl_debug(void *context, int level, const char *line)
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{
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struct Curl_easy *data = NULL;
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if(!context)
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return;
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data = (struct Curl_easy *)context;
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infof(data, "%s", line);
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(void) level;
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}
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#else
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#endif
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/* ALPN for http2? */
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#ifdef POLARSSL_SSL_ALPN
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# define HAS_ALPN
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#endif
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static Curl_recv polarssl_recv;
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static Curl_send polarssl_send;
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static CURLcode polarssl_version_from_curl(int *polarver, long ssl_version)
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{
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switch(ssl_version) {
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case CURL_SSLVERSION_TLSv1_0:
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*polarver = SSL_MINOR_VERSION_1;
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return CURLE_OK;
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case CURL_SSLVERSION_TLSv1_1:
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*polarver = SSL_MINOR_VERSION_2;
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return CURLE_OK;
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case CURL_SSLVERSION_TLSv1_2:
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*polarver = SSL_MINOR_VERSION_3;
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return CURLE_OK;
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case CURL_SSLVERSION_TLSv1_3:
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break;
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}
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return CURLE_SSL_CONNECT_ERROR;
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}
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static CURLcode
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set_ssl_version_min_max(struct connectdata *conn, int sockindex)
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{
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struct Curl_easy *data = conn->data;
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struct ssl_connect_data* connssl = &conn->ssl[sockindex];
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long ssl_version = SSL_CONN_CONFIG(version);
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long ssl_version_max = SSL_CONN_CONFIG(version_max);
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int ssl_min_ver = SSL_MINOR_VERSION_1;
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int ssl_max_ver = SSL_MINOR_VERSION_1;
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CURLcode result = CURLE_OK;
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switch(ssl_version) {
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case CURL_SSLVERSION_DEFAULT:
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case CURL_SSLVERSION_TLSv1:
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ssl_version = CURL_SSLVERSION_TLSv1_0;
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ssl_version_max = CURL_SSLVERSION_MAX_TLSv1_2;
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break;
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}
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switch(ssl_version_max) {
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case CURL_SSLVERSION_MAX_NONE:
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ssl_version_max = ssl_version << 16;
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break;
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case CURL_SSLVERSION_MAX_DEFAULT:
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ssl_version_max = CURL_SSLVERSION_MAX_TLSv1_2;
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break;
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}
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result = polarssl_version_from_curl(&ssl_min_ver, ssl_version);
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if(result) {
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failf(data, "unsupported min version passed via CURLOPT_SSLVERSION");
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return result;
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}
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result = polarssl_version_from_curl(&ssl_max_ver, ssl_version_max >> 16);
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if(result) {
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failf(data, "unsupported max version passed via CURLOPT_SSLVERSION");
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return result;
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}
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ssl_set_min_version(&BACKEND->ssl, SSL_MAJOR_VERSION_3, ssl_min_ver);
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ssl_set_max_version(&BACKEND->ssl, SSL_MAJOR_VERSION_3, ssl_max_ver);
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return result;
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}
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static CURLcode
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polarssl_connect_step1(struct connectdata *conn,
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int sockindex)
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{
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struct Curl_easy *data = conn->data;
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struct ssl_connect_data* connssl = &conn->ssl[sockindex];
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const char *capath = SSL_CONN_CONFIG(CApath);
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const char * const hostname = SSL_IS_PROXY() ? conn->http_proxy.host.name :
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conn->host.name;
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const long int port = SSL_IS_PROXY() ? conn->port : conn->remote_port;
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int ret = -1;
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char errorbuf[128];
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errorbuf[0] = 0;
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/* PolarSSL only supports SSLv3 and TLSv1 */
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if(SSL_CONN_CONFIG(version) == CURL_SSLVERSION_SSLv2) {
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failf(data, "PolarSSL does not support SSLv2");
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return CURLE_SSL_CONNECT_ERROR;
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}
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#ifdef THREADING_SUPPORT
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entropy_init_mutex(&entropy);
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if((ret = ctr_drbg_init(&BACKEND->ctr_drbg, entropy_func_mutex, &entropy,
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NULL, 0)) != 0) {
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error_strerror(ret, errorbuf, sizeof(errorbuf));
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failf(data, "Failed - PolarSSL: ctr_drbg_init returned (-0x%04X) %s\n",
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-ret, errorbuf);
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}
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#else
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entropy_init(&BACKEND->entropy);
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if((ret = ctr_drbg_init(&BACKEND->ctr_drbg, entropy_func, &BACKEND->entropy,
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NULL, 0)) != 0) {
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error_strerror(ret, errorbuf, sizeof(errorbuf));
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failf(data, "Failed - PolarSSL: ctr_drbg_init returned (-0x%04X) %s\n",
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-ret, errorbuf);
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}
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#endif /* THREADING_SUPPORT */
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/* Load the trusted CA */
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memset(&BACKEND->cacert, 0, sizeof(x509_crt));
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if(SSL_CONN_CONFIG(CAfile)) {
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ret = x509_crt_parse_file(&BACKEND->cacert,
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SSL_CONN_CONFIG(CAfile));
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if(ret<0) {
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error_strerror(ret, errorbuf, sizeof(errorbuf));
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failf(data, "Error reading ca cert file %s - PolarSSL: (-0x%04X) %s",
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SSL_CONN_CONFIG(CAfile), -ret, errorbuf);
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if(SSL_CONN_CONFIG(verifypeer))
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return CURLE_SSL_CACERT_BADFILE;
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}
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}
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if(capath) {
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ret = x509_crt_parse_path(&BACKEND->cacert, capath);
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if(ret<0) {
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error_strerror(ret, errorbuf, sizeof(errorbuf));
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failf(data, "Error reading ca cert path %s - PolarSSL: (-0x%04X) %s",
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capath, -ret, errorbuf);
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if(SSL_CONN_CONFIG(verifypeer))
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return CURLE_SSL_CACERT_BADFILE;
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}
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}
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/* Load the client certificate */
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memset(&BACKEND->clicert, 0, sizeof(x509_crt));
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if(SSL_SET_OPTION(cert)) {
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ret = x509_crt_parse_file(&BACKEND->clicert,
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SSL_SET_OPTION(cert));
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if(ret) {
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error_strerror(ret, errorbuf, sizeof(errorbuf));
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failf(data, "Error reading client cert file %s - PolarSSL: (-0x%04X) %s",
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SSL_SET_OPTION(cert), -ret, errorbuf);
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return CURLE_SSL_CERTPROBLEM;
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}
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}
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/* Load the client private key */
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if(SSL_SET_OPTION(key)) {
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pk_context pk;
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pk_init(&pk);
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ret = pk_parse_keyfile(&pk, SSL_SET_OPTION(key),
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SSL_SET_OPTION(key_passwd));
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if(ret == 0 && !pk_can_do(&pk, POLARSSL_PK_RSA))
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ret = POLARSSL_ERR_PK_TYPE_MISMATCH;
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if(ret == 0)
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rsa_copy(&BACKEND->rsa, pk_rsa(pk));
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else
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rsa_free(&BACKEND->rsa);
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pk_free(&pk);
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if(ret) {
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error_strerror(ret, errorbuf, sizeof(errorbuf));
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failf(data, "Error reading private key %s - PolarSSL: (-0x%04X) %s",
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SSL_SET_OPTION(key), -ret, errorbuf);
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return CURLE_SSL_CERTPROBLEM;
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}
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}
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/* Load the CRL */
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memset(&BACKEND->crl, 0, sizeof(x509_crl));
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if(SSL_SET_OPTION(CRLfile)) {
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ret = x509_crl_parse_file(&BACKEND->crl,
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SSL_SET_OPTION(CRLfile));
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if(ret) {
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error_strerror(ret, errorbuf, sizeof(errorbuf));
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failf(data, "Error reading CRL file %s - PolarSSL: (-0x%04X) %s",
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SSL_SET_OPTION(CRLfile), -ret, errorbuf);
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return CURLE_SSL_CRL_BADFILE;
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}
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}
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infof(data, "PolarSSL: Connecting to %s:%d\n", hostname, port);
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if(ssl_init(&BACKEND->ssl)) {
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failf(data, "PolarSSL: ssl_init failed");
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return CURLE_SSL_CONNECT_ERROR;
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}
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switch(SSL_CONN_CONFIG(version)) {
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case CURL_SSLVERSION_DEFAULT:
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case CURL_SSLVERSION_TLSv1:
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ssl_set_min_version(&BACKEND->ssl, SSL_MAJOR_VERSION_3,
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SSL_MINOR_VERSION_1);
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break;
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case CURL_SSLVERSION_SSLv3:
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ssl_set_min_version(&BACKEND->ssl, SSL_MAJOR_VERSION_3,
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SSL_MINOR_VERSION_0);
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ssl_set_max_version(&BACKEND->ssl, SSL_MAJOR_VERSION_3,
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SSL_MINOR_VERSION_0);
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infof(data, "PolarSSL: Forced min. SSL Version to be SSLv3\n");
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break;
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case CURL_SSLVERSION_TLSv1_0:
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case CURL_SSLVERSION_TLSv1_1:
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case CURL_SSLVERSION_TLSv1_2:
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case CURL_SSLVERSION_TLSv1_3:
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{
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CURLcode result = set_ssl_version_min_max(conn, sockindex);
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if(result != CURLE_OK)
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return result;
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break;
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}
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default:
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failf(data, "Unrecognized parameter passed via CURLOPT_SSLVERSION");
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return CURLE_SSL_CONNECT_ERROR;
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}
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ssl_set_endpoint(&BACKEND->ssl, SSL_IS_CLIENT);
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ssl_set_authmode(&BACKEND->ssl, SSL_VERIFY_OPTIONAL);
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ssl_set_rng(&BACKEND->ssl, ctr_drbg_random,
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&BACKEND->ctr_drbg);
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ssl_set_bio(&BACKEND->ssl,
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net_recv, &conn->sock[sockindex],
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net_send, &conn->sock[sockindex]);
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ssl_set_ciphersuites(&BACKEND->ssl, ssl_list_ciphersuites());
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/* Check if there's a cached ID we can/should use here! */
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if(SSL_SET_OPTION(primary.sessionid)) {
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void *old_session = NULL;
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Curl_ssl_sessionid_lock(conn);
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if(!Curl_ssl_getsessionid(conn, &old_session, NULL, sockindex)) {
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ret = ssl_set_session(&BACKEND->ssl, old_session);
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if(ret) {
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Curl_ssl_sessionid_unlock(conn);
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failf(data, "ssl_set_session returned -0x%x", -ret);
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return CURLE_SSL_CONNECT_ERROR;
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}
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infof(data, "PolarSSL re-using session\n");
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}
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Curl_ssl_sessionid_unlock(conn);
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}
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ssl_set_ca_chain(&BACKEND->ssl,
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&BACKEND->cacert,
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&BACKEND->crl,
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hostname);
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ssl_set_own_cert_rsa(&BACKEND->ssl,
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&BACKEND->clicert, &BACKEND->rsa);
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if(ssl_set_hostname(&BACKEND->ssl, hostname)) {
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/* ssl_set_hostname() sets the name to use in CN/SAN checks *and* the name
|
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to set in the SNI extension. So even if curl connects to a host
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specified as an IP address, this function must be used. */
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failf(data, "couldn't set hostname in PolarSSL");
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return CURLE_SSL_CONNECT_ERROR;
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}
|
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|
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#ifdef HAS_ALPN
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|
if(conn->bits.tls_enable_alpn) {
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static const char *protocols[3];
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int cur = 0;
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|
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#ifdef USE_NGHTTP2
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if(data->set.httpversion >= CURL_HTTP_VERSION_2) {
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protocols[cur++] = NGHTTP2_PROTO_VERSION_ID;
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infof(data, "ALPN, offering %s\n", NGHTTP2_PROTO_VERSION_ID);
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}
|
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#endif
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protocols[cur++] = ALPN_HTTP_1_1;
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infof(data, "ALPN, offering %s\n", ALPN_HTTP_1_1);
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|
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protocols[cur] = NULL;
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|
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ssl_set_alpn_protocols(&BACKEND->ssl, protocols);
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}
|
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#endif
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|
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#ifdef POLARSSL_DEBUG
|
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ssl_set_dbg(&BACKEND->ssl, polarssl_debug, data);
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|
#endif
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|
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connssl->connecting_state = ssl_connect_2;
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|
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return CURLE_OK;
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}
|
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|
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static CURLcode
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polarssl_connect_step2(struct connectdata *conn,
|
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int sockindex)
|
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{
|
|
int ret;
|
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struct Curl_easy *data = conn->data;
|
|
struct ssl_connect_data* connssl = &conn->ssl[sockindex];
|
|
char buffer[1024];
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const char * const pinnedpubkey = SSL_IS_PROXY() ?
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data->set.str[STRING_SSL_PINNEDPUBLICKEY_PROXY] :
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data->set.str[STRING_SSL_PINNEDPUBLICKEY_ORIG];
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|
|
|
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char errorbuf[128];
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errorbuf[0] = 0;
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|
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conn->recv[sockindex] = polarssl_recv;
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conn->send[sockindex] = polarssl_send;
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|
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ret = ssl_handshake(&BACKEND->ssl);
|
|
|
|
switch(ret) {
|
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case 0:
|
|
break;
|
|
|
|
case POLARSSL_ERR_NET_WANT_READ:
|
|
connssl->connecting_state = ssl_connect_2_reading;
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return CURLE_OK;
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|
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case POLARSSL_ERR_NET_WANT_WRITE:
|
|
connssl->connecting_state = ssl_connect_2_writing;
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return CURLE_OK;
|
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|
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default:
|
|
error_strerror(ret, errorbuf, sizeof(errorbuf));
|
|
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(&BACKEND->ssl) );
|
|
|
|
ret = ssl_get_verify_result(&BACKEND->ssl);
|
|
|
|
if(ret && SSL_CONN_CONFIG(verifypeer)) {
|
|
if(ret & BADCERT_EXPIRED)
|
|
failf(data, "Cert verify failed: BADCERT_EXPIRED");
|
|
|
|
if(ret & BADCERT_REVOKED) {
|
|
failf(data, "Cert verify failed: BADCERT_REVOKED");
|
|
return CURLE_SSL_CACERT;
|
|
}
|
|
|
|
if(ret & BADCERT_CN_MISMATCH)
|
|
failf(data, "Cert verify failed: BADCERT_CN_MISMATCH");
|
|
|
|
if(ret & BADCERT_NOT_TRUSTED)
|
|
failf(data, "Cert verify failed: BADCERT_NOT_TRUSTED");
|
|
|
|
return CURLE_PEER_FAILED_VERIFICATION;
|
|
}
|
|
|
|
if(ssl_get_peer_cert(&(BACKEND->ssl))) {
|
|
/* If the session was resumed, there will be no peer certs */
|
|
memset(buffer, 0, sizeof(buffer));
|
|
|
|
if(x509_crt_info(buffer, sizeof(buffer), (char *)"* ",
|
|
ssl_get_peer_cert(&(BACKEND->ssl))) != -1)
|
|
infof(data, "Dumping cert info:\n%s\n", buffer);
|
|
}
|
|
|
|
/* adapted from mbedtls.c */
|
|
if(pinnedpubkey) {
|
|
int size;
|
|
CURLcode result;
|
|
x509_crt *p;
|
|
unsigned char pubkey[PUB_DER_MAX_BYTES];
|
|
const x509_crt *peercert;
|
|
|
|
peercert = ssl_get_peer_cert(&BACKEND->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,
|
|
pinnedpubkey,
|
|
&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(conn->bits.tls_enable_alpn) {
|
|
const char *next_protocol = ssl_get_alpn_protocol(&BACKEND->ssl);
|
|
|
|
if(next_protocol != NULL) {
|
|
infof(data, "ALPN, server accepted to use %s\n", next_protocol);
|
|
|
|
#ifdef USE_NGHTTP2
|
|
if(!strncmp(next_protocol, NGHTTP2_PROTO_VERSION_ID,
|
|
NGHTTP2_PROTO_VERSION_ID_LEN)) {
|
|
conn->negnpn = CURL_HTTP_VERSION_2;
|
|
}
|
|
else
|
|
#endif
|
|
if(!strncmp(next_protocol, ALPN_HTTP_1_1, ALPN_HTTP_1_1_LENGTH)) {
|
|
conn->negnpn = CURL_HTTP_VERSION_1_1;
|
|
}
|
|
}
|
|
else
|
|
infof(data, "ALPN, server did not agree to a protocol\n");
|
|
}
|
|
#endif
|
|
|
|
connssl->connecting_state = ssl_connect_3;
|
|
infof(data, "SSL connected\n");
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
static CURLcode
|
|
polarssl_connect_step3(struct connectdata *conn,
|
|
int sockindex)
|
|
{
|
|
CURLcode retcode = CURLE_OK;
|
|
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
|
struct Curl_easy *data = conn->data;
|
|
|
|
DEBUGASSERT(ssl_connect_3 == connssl->connecting_state);
|
|
|
|
if(SSL_SET_OPTION(primary.sessionid)) {
|
|
int ret;
|
|
ssl_session *our_ssl_sessionid;
|
|
void *old_ssl_sessionid = NULL;
|
|
|
|
our_ssl_sessionid = malloc(sizeof(ssl_session));
|
|
if(!our_ssl_sessionid)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
memset(our_ssl_sessionid, 0, sizeof(ssl_session));
|
|
|
|
ret = ssl_get_session(&BACKEND->ssl, our_ssl_sessionid);
|
|
if(ret) {
|
|
failf(data, "ssl_get_session returned -0x%x", -ret);
|
|
return CURLE_SSL_CONNECT_ERROR;
|
|
}
|
|
|
|
/* 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, sockindex))
|
|
Curl_ssl_delsessionid(conn, old_ssl_sessionid);
|
|
|
|
retcode = Curl_ssl_addsessionid(conn, our_ssl_sessionid, 0, sockindex);
|
|
Curl_ssl_sessionid_unlock(conn);
|
|
if(retcode) {
|
|
free(our_ssl_sessionid);
|
|
failf(data, "failed to store ssl session");
|
|
return retcode;
|
|
}
|
|
}
|
|
|
|
connssl->connecting_state = ssl_connect_done;
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
static ssize_t polarssl_send(struct connectdata *conn,
|
|
int sockindex,
|
|
const void *mem,
|
|
size_t len,
|
|
CURLcode *curlcode)
|
|
{
|
|
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
|
int ret = -1;
|
|
|
|
ret = ssl_write(&BACKEND->ssl,
|
|
(unsigned char *)mem, len);
|
|
|
|
if(ret < 0) {
|
|
*curlcode = (ret == POLARSSL_ERR_NET_WANT_WRITE) ?
|
|
CURLE_AGAIN : CURLE_SEND_ERROR;
|
|
ret = -1;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void Curl_polarssl_close(struct connectdata *conn, int sockindex)
|
|
{
|
|
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
|
rsa_free(&BACKEND->rsa);
|
|
x509_crt_free(&BACKEND->clicert);
|
|
x509_crt_free(&BACKEND->cacert);
|
|
x509_crl_free(&BACKEND->crl);
|
|
ssl_free(&BACKEND->ssl);
|
|
}
|
|
|
|
static ssize_t polarssl_recv(struct connectdata *conn,
|
|
int num,
|
|
char *buf,
|
|
size_t buffersize,
|
|
CURLcode *curlcode)
|
|
{
|
|
struct ssl_connect_data *connssl = &conn->ssl[num];
|
|
int ret = -1;
|
|
ssize_t len = -1;
|
|
|
|
memset(buf, 0, buffersize);
|
|
ret = ssl_read(&BACKEND->ssl, (unsigned char *)buf, buffersize);
|
|
|
|
if(ret <= 0) {
|
|
if(ret == POLARSSL_ERR_SSL_PEER_CLOSE_NOTIFY)
|
|
return 0;
|
|
|
|
*curlcode = (ret == POLARSSL_ERR_NET_WANT_READ) ?
|
|
CURLE_AGAIN : CURLE_RECV_ERROR;
|
|
return -1;
|
|
}
|
|
|
|
len = ret;
|
|
|
|
return len;
|
|
}
|
|
|
|
static 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.. */
|
|
|
|
static size_t Curl_polarssl_version(char *buffer, size_t size)
|
|
{
|
|
unsigned int version = version_get_number();
|
|
return snprintf(buffer, size, "%s/%d.%d.%d",
|
|
version >= 0x01030A00?"mbedTLS":"PolarSSL",
|
|
version>>24, (version>>16)&0xff, (version>>8)&0xff);
|
|
}
|
|
|
|
static CURLcode
|
|
polarssl_connect_common(struct connectdata *conn,
|
|
int sockindex,
|
|
bool nonblocking,
|
|
bool *done)
|
|
{
|
|
CURLcode result;
|
|
struct Curl_easy *data = conn->data;
|
|
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
|
curl_socket_t sockfd = conn->sock[sockindex];
|
|
long timeout_ms;
|
|
int what;
|
|
|
|
/* check if the connection has already been established */
|
|
if(ssl_connection_complete == connssl->state) {
|
|
*done = TRUE;
|
|
return CURLE_OK;
|
|
}
|
|
|
|
if(ssl_connect_1 == connssl->connecting_state) {
|
|
/* Find out how much more time we're allowed */
|
|
timeout_ms = Curl_timeleft(data, NULL, TRUE);
|
|
|
|
if(timeout_ms < 0) {
|
|
/* no need to continue if time already is up */
|
|
failf(data, "SSL connection timeout");
|
|
return CURLE_OPERATION_TIMEDOUT;
|
|
}
|
|
|
|
result = polarssl_connect_step1(conn, sockindex);
|
|
if(result)
|
|
return result;
|
|
}
|
|
|
|
while(ssl_connect_2 == connssl->connecting_state ||
|
|
ssl_connect_2_reading == connssl->connecting_state ||
|
|
ssl_connect_2_writing == connssl->connecting_state) {
|
|
|
|
/* check allowed time left */
|
|
timeout_ms = Curl_timeleft(data, NULL, TRUE);
|
|
|
|
if(timeout_ms < 0) {
|
|
/* no need to continue if time already is up */
|
|
failf(data, "SSL connection timeout");
|
|
return CURLE_OPERATION_TIMEDOUT;
|
|
}
|
|
|
|
/* if ssl is expecting something, check if it's available. */
|
|
if(connssl->connecting_state == ssl_connect_2_reading ||
|
|
connssl->connecting_state == ssl_connect_2_writing) {
|
|
|
|
curl_socket_t writefd = ssl_connect_2_writing ==
|
|
connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
|
|
curl_socket_t readfd = ssl_connect_2_reading ==
|
|
connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
|
|
|
|
what = Curl_socket_check(readfd, CURL_SOCKET_BAD, writefd,
|
|
nonblocking?0:timeout_ms);
|
|
if(what < 0) {
|
|
/* fatal error */
|
|
failf(data, "select/poll on SSL socket, errno: %d", SOCKERRNO);
|
|
return CURLE_SSL_CONNECT_ERROR;
|
|
}
|
|
else if(0 == what) {
|
|
if(nonblocking) {
|
|
*done = FALSE;
|
|
return CURLE_OK;
|
|
}
|
|
else {
|
|
/* timeout */
|
|
failf(data, "SSL connection timeout");
|
|
return CURLE_OPERATION_TIMEDOUT;
|
|
}
|
|
}
|
|
/* socket is readable or writable */
|
|
}
|
|
|
|
/* Run transaction, and return to the caller if it failed or if
|
|
* this connection is part of a multi handle and this loop would
|
|
* execute again. This permits the owner of a multi handle to
|
|
* abort a connection attempt before step2 has completed while
|
|
* ensuring that a client using select() or epoll() will always
|
|
* have a valid fdset to wait on.
|
|
*/
|
|
result = polarssl_connect_step2(conn, sockindex);
|
|
if(result || (nonblocking &&
|
|
(ssl_connect_2 == connssl->connecting_state ||
|
|
ssl_connect_2_reading == connssl->connecting_state ||
|
|
ssl_connect_2_writing == connssl->connecting_state)))
|
|
return result;
|
|
|
|
} /* repeat step2 until all transactions are done. */
|
|
|
|
if(ssl_connect_3 == connssl->connecting_state) {
|
|
result = polarssl_connect_step3(conn, sockindex);
|
|
if(result)
|
|
return result;
|
|
}
|
|
|
|
if(ssl_connect_done == connssl->connecting_state) {
|
|
connssl->state = ssl_connection_complete;
|
|
conn->recv[sockindex] = polarssl_recv;
|
|
conn->send[sockindex] = polarssl_send;
|
|
*done = TRUE;
|
|
}
|
|
else
|
|
*done = FALSE;
|
|
|
|
/* Reset our connect state machine */
|
|
connssl->connecting_state = ssl_connect_1;
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
static CURLcode Curl_polarssl_connect_nonblocking(struct connectdata *conn,
|
|
int sockindex, bool *done)
|
|
{
|
|
return polarssl_connect_common(conn, sockindex, TRUE, done);
|
|
}
|
|
|
|
|
|
static CURLcode Curl_polarssl_connect(struct connectdata *conn, int sockindex)
|
|
{
|
|
CURLcode result;
|
|
bool done = FALSE;
|
|
|
|
result = polarssl_connect_common(conn, sockindex, FALSE, &done);
|
|
if(result)
|
|
return result;
|
|
|
|
DEBUGASSERT(done);
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/*
|
|
* return 0 error initializing SSL
|
|
* return 1 SSL initialized successfully
|
|
*/
|
|
static int Curl_polarssl_init(void)
|
|
{
|
|
return Curl_polarsslthreadlock_thread_setup();
|
|
}
|
|
|
|
static void Curl_polarssl_cleanup(void)
|
|
{
|
|
(void)Curl_polarsslthreadlock_thread_cleanup();
|
|
}
|
|
|
|
static bool Curl_polarssl_data_pending(const struct connectdata *conn,
|
|
int sockindex)
|
|
{
|
|
const struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
|
return ssl_get_bytes_avail(&BACKEND->ssl) != 0;
|
|
}
|
|
|
|
static void Curl_polarssl_sha256sum(const unsigned char *input,
|
|
size_t inputlen,
|
|
unsigned char *sha256sum,
|
|
size_t sha256len UNUSED_PARAM)
|
|
{
|
|
(void)sha256len;
|
|
sha256(input, inputlen, sha256sum, 0);
|
|
}
|
|
|
|
static void *Curl_polarssl_get_internals(struct ssl_connect_data *connssl,
|
|
CURLINFO info UNUSED_PARAM)
|
|
{
|
|
(void)info;
|
|
return &BACKEND->ssl;
|
|
}
|
|
|
|
const struct Curl_ssl Curl_ssl_polarssl = {
|
|
{ CURLSSLBACKEND_POLARSSL, "polarssl" }, /* info */
|
|
|
|
1, /* have_ca_path */
|
|
0, /* have_certinfo */
|
|
1, /* have_pinnedpubkey */
|
|
0, /* have_ssl_ctx */
|
|
0, /* support_https_proxy */
|
|
|
|
sizeof(struct ssl_backend_data),
|
|
|
|
Curl_polarssl_init, /* init */
|
|
Curl_polarssl_cleanup, /* cleanup */
|
|
Curl_polarssl_version, /* version */
|
|
Curl_none_check_cxn, /* check_cxn */
|
|
Curl_none_shutdown, /* shutdown */
|
|
Curl_polarssl_data_pending, /* data_pending */
|
|
/* This might cause libcurl to use a weeker random!
|
|
* TODO: use Polarssl's CTR-DRBG or HMAC-DRBG
|
|
*/
|
|
Curl_none_random, /* random */
|
|
Curl_none_cert_status_request, /* cert_status_request */
|
|
Curl_polarssl_connect, /* connect */
|
|
Curl_polarssl_connect_nonblocking, /* connect_nonblocking */
|
|
Curl_polarssl_get_internals, /* get_internals */
|
|
Curl_polarssl_close, /* close_one */
|
|
Curl_none_close_all, /* close_all */
|
|
Curl_polarssl_session_free, /* session_free */
|
|
Curl_none_set_engine, /* set_engine */
|
|
Curl_none_set_engine_default, /* set_engine_default */
|
|
Curl_none_engines_list, /* engines_list */
|
|
Curl_none_false_start, /* false_start */
|
|
Curl_none_md5sum, /* md5sum */
|
|
Curl_polarssl_sha256sum /* sha256sum */
|
|
};
|
|
|
|
#endif /* USE_POLARSSL */
|