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/*
* ustream-ssl - library for SSL over ustream
*
* Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "ustream-ssl.h"
#include "ustream-internal.h"
__hidden void * __ustream_ssl_context_new(bool server)
{
static bool _init = false;
const void *m;
SSL_CTX *c;
if (!_init) {
SSL_load_error_strings();
SSL_library_init();
_init = true;
}
#ifdef CYASSL_OPENSSL_H_
if (server)
m = SSLv23_server_method();
else
m = SSLv23_client_method();
#else
if (server)
m = TLSv1_server_method();
else
m = TLSv1_client_method();
#endif
c = SSL_CTX_new((void *) m);
if (!c)
return NULL;
if (server)
SSL_CTX_set_verify(c, SSL_VERIFY_NONE, NULL);
return c;
}
__hidden int __ustream_ssl_set_crt_file(void *ctx, const char *file)
{
int ret;
ret = SSL_CTX_use_certificate_file(ctx, file, SSL_FILETYPE_PEM);
if (ret < 1)
ret = SSL_CTX_use_certificate_file(ctx, file, SSL_FILETYPE_ASN1);
if (ret < 1)
return -1;
return 0;
}
__hidden int __ustream_ssl_set_key_file(void *ctx, const char *file)
{
int ret;
ret = SSL_CTX_use_PrivateKey_file(ctx, file, SSL_FILETYPE_PEM);
if (ret < 1)
ret = SSL_CTX_use_PrivateKey_file(ctx, file, SSL_FILETYPE_ASN1);
if (ret < 1)
return -1;
return 0;
}
__hidden void __ustream_ssl_context_free(void *ctx)
{
SSL_CTX_free(ctx);
}
static void ustream_ssl_error(struct ustream_ssl *us, int ret)
{
us->error = ret;
uloop_timeout_set(&us->error_timer, 0);
}
__hidden enum ssl_conn_status __ustream_ssl_connect(struct ustream_ssl *us)
{
void *ssl = us->ssl;
int r;
if (us->server)
r = SSL_accept(ssl);
else
r = SSL_connect(ssl);
if (r == 1)
return U_SSL_OK;
r = SSL_get_error(ssl, r);
if (r == SSL_ERROR_WANT_READ || r == SSL_ERROR_WANT_WRITE)
return U_SSL_PENDING;
ustream_ssl_error(us, r);
return U_SSL_ERROR;
}
__hidden int __ustream_ssl_write(struct ustream_ssl *us, const char *buf, int len)
{
void *ssl = us->ssl;
int ret = SSL_write(ssl, buf, len);
if (ret < 0) {
int err = SSL_get_error(ssl, ret);
if (err == SSL_ERROR_WANT_WRITE)
return 0;
ustream_ssl_error(us, err);
return -1;
}
return ret;
}
__hidden int __ustream_ssl_read(struct ustream_ssl *us, char *buf, int len)
{
int ret = SSL_read(us->ssl, buf, len);
if (ret < 0) {
ret = SSL_get_error(us->ssl, ret);
if (ret == SSL_ERROR_WANT_READ)
return U_SSL_PENDING;
ustream_ssl_error(us, ret);
return U_SSL_ERROR;
}
return ret;
}
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