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mbedtls: client provide CA

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WIP https://github.com/warmcat/libwebsockets/issues/1011
This commit is contained in:
Andy Green 2017-09-02 10:50:54 +08:00
parent 32eaf83f24
commit f8fad0d350
3 changed files with 54 additions and 21 deletions
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10
lib/private-libwebsockets.h
View file

@ -273,10 +273,11 @@ lws_plat_get_peer_simple(struct lws *wsi, char *name, int namelen);
#define OPENSSL_NO_TLSEXT
#endif /* not USE_OLD_CYASSL */
#else
#if !defined(LWS_WITH_ESP32)
#if defined(LWS_USE_MBEDTLS)
#include <mbedtls/ssl.h>
#include <mbedtls/x509_crt.h>
#else
#include <openssl/ssl.h>
#endif
#if !defined(LWS_USE_MBEDTLS)
#include <openssl/evp.h>
#include <openssl/err.h>
#include <openssl/md5.h>
@ -878,6 +879,9 @@ struct lws_vhost {
SSL_CTX *ssl_ctx;
SSL_CTX *ssl_client_ctx;
#endif
#if defined(LWS_USE_MBEDTLS)
X509 *x509_client_CA;
#endif
#ifndef LWS_NO_EXTENSIONS
const struct lws_extension *extensions;
#endif

60
lib/ssl-client.c
View file

@ -175,9 +175,10 @@ lws_ssl_client_bio_create(struct lws *wsi)
#endif
#else
#if defined(LWS_USE_MBEDTLS)
// esp-idf openssl shim does not seem ready for this
// SSL_set_verify(wsi->ssl, SSL_VERIFY_PEER, OpenSSL_client_verify_callback);
SSL_set_verify(wsi->ssl, SSL_VERIFY_NONE, OpenSSL_client_verify_callback);
if (wsi->vhost->x509_client_CA)
SSL_set_verify(wsi->ssl, SSL_VERIFY_PEER, OpenSSL_client_verify_callback);
else
SSL_set_verify(wsi->ssl, SSL_VERIFY_NONE, OpenSSL_client_verify_callback);
#else
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
@ -434,12 +435,11 @@ int lws_context_init_client_ssl(struct lws_context_creation_info *info,
SSL_METHOD *method = NULL;
struct lws wsi;
unsigned long error;
const char *ca_filepath = info->ssl_ca_filepath;
#if !defined(LWS_USE_MBEDTLS)
const char *cipher_list = info->ssl_cipher_list;
const char *ca_filepath = info->ssl_ca_filepath;
const char *private_key_filepath = info->ssl_private_key_filepath;
const char *cert_filepath = info->ssl_cert_filepath;
int n;
/*
@ -448,13 +448,13 @@ int lws_context_init_client_ssl(struct lws_context_creation_info *info,
*/
if (info->client_ssl_cipher_list)
cipher_list = info->client_ssl_cipher_list;
if (info->client_ssl_ca_filepath)
ca_filepath = info->client_ssl_ca_filepath;
if (info->client_ssl_cert_filepath)
cert_filepath = info->client_ssl_cert_filepath;
if (info->client_ssl_private_key_filepath)
private_key_filepath = info->client_ssl_private_key_filepath;
#endif
if (info->client_ssl_ca_filepath)
ca_filepath = info->client_ssl_ca_filepath;
if (!lws_check_opt(info->options, LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT))
return 0;
@ -498,11 +498,40 @@ int lws_context_init_client_ssl(struct lws_context_creation_info *info,
return 1;
}
lwsl_notice("created client ssl context for %s\n", vhost->name);
#ifdef SSL_OP_NO_COMPRESSION
SSL_CTX_set_options(vhost->ssl_client_ctx, SSL_OP_NO_COMPRESSION);
#endif
#if !defined(LWS_USE_MBEDTLS)
#if defined(LWS_USE_MBEDTLS)
if (ca_filepath) {
lws_filepos_t len;
uint8_t *buf;
/*
* prototype this here, the shim does not export it in the
* header, and we need to use the shim unchanged for ESP32 case
*/
X509 *d2i_X509(X509 **cert, const unsigned char *buffer, long len);
if (alloc_file(vhost->context, ca_filepath, &buf, &len)) {
lwsl_err("Load CA cert file %s failed\n", ca_filepath);
return 1;
}
vhost->x509_client_CA = d2i_X509(NULL, buf, len);
free(buf);
if (!vhost->x509_client_CA) {
lwsl_err("client CA: x509 parse failed\n");
return 1;
}
SSL_CTX_add_client_CA(vhost->ssl_client_ctx,
vhost->x509_client_CA);
lwsl_notice("client loaded CA for verification %s\n", ca_filepath);
}
#else
SSL_CTX_set_options(vhost->ssl_client_ctx,
SSL_OP_CIPHER_SERVER_PREFERENCE);
@ -518,13 +547,11 @@ int lws_context_init_client_ssl(struct lws_context_creation_info *info,
/* openssl init for cert verification (for client sockets) */
if (!ca_filepath) {
if (!SSL_CTX_load_verify_locations(
vhost->ssl_client_ctx, NULL,
LWS_OPENSSL_CLIENT_CERTS))
lwsl_err(
"Unable to load SSL Client certs from %s "
"(set by --with-client-cert-dir= "
"in configure) -- client ssl isn't "
"going to work\n", LWS_OPENSSL_CLIENT_CERTS);
vhost->ssl_client_ctx, NULL, LWS_OPENSSL_CLIENT_CERTS))
lwsl_err("Unable to load SSL Client certs from %s "
"(set by LWS_OPENSSL_CLIENT_CERTS) -- "
"client ssl isn't going to work\n",
LWS_OPENSSL_CLIENT_CERTS);
} else
if (!SSL_CTX_load_verify_locations(
vhost->ssl_client_ctx, ca_filepath, NULL)) {
@ -536,12 +563,11 @@ int lws_context_init_client_ssl(struct lws_context_creation_info *info,
}
else
lwsl_info("loaded ssl_ca_filepath\n");
#endif
/*
* callback allowing user code to load extra verification certs
* helping the client to verify server identity
*/
#if !defined(LWS_USE_MBEDTLS)
/* support for client-side certificate authentication */
if (cert_filepath) {

5
lib/ssl.c
View file

@ -346,8 +346,11 @@ lws_ssl_destroy(struct lws_vhost *vhost)
SSL_CTX_free(vhost->ssl_ctx);
if (!vhost->user_supplied_ssl_ctx && vhost->ssl_client_ctx)
SSL_CTX_free(vhost->ssl_client_ctx);
#if !defined(LWS_USE_MBEDTLS)
#if defined(LWS_USE_MBEDTLS)
if (vhost->x509_client_CA)
X509_free(vhost->x509_client_CA);
#else
// after 1.1.0 no need
#if (OPENSSL_VERSION_NUMBER < 0x10100000)
// <= 1.0.1f = old api, 1.0.1g+ = new api