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/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
Copyright (C) 2012 Red Hat, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <glib.h>
#include "spice-util.h"
#include "bio-gio.h"
typedef struct bio_gsocket_method {
BIO_METHOD method;
GIOStream *stream;
} bio_gsocket_method;
#define BIO_GET_GSOCKET(bio) (((bio_gsocket_method*)bio->method)->gsocket)
#define BIO_GET_ISTREAM(bio) (g_io_stream_get_input_stream(((bio_gsocket_method*)bio->method)->stream))
#define BIO_GET_OSTREAM(bio) (g_io_stream_get_output_stream(((bio_gsocket_method*)bio->method)->stream))
static int bio_gio_write(BIO *bio, const char *in, int inl)
{
gssize ret;
GError *error = NULL;
ret = g_pollable_output_stream_write_nonblocking(G_POLLABLE_OUTPUT_STREAM(BIO_GET_OSTREAM(bio)),
in, inl, NULL, &error);
BIO_clear_retry_flags(bio);
if (g_error_matches(error, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK))
BIO_set_retry_write(bio);
if (error != NULL) {
g_warning("%s", error->message);
g_clear_error(&error);
}
return ret;
}
static int bio_gio_read(BIO *bio, char *out, int outl)
{
gssize ret;
GError *error = NULL;
ret = g_pollable_input_stream_read_nonblocking(G_POLLABLE_INPUT_STREAM(BIO_GET_ISTREAM(bio)),
out, outl, NULL, &error);
BIO_clear_retry_flags(bio);
if (g_error_matches(error, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK))
BIO_set_retry_read(bio);
else if (error != NULL)
g_warning("%s", error->message);
g_clear_error(&error);
return ret;
}
static int bio_gio_destroy(BIO *bio)
{
if (bio == NULL || bio->method == NULL)
return 0;
SPICE_DEBUG("bio gsocket destroy");
g_clear_pointer(&bio->method, g_free);
return 1;
}
static int bio_gio_puts(BIO *bio, const char *str)
{
int n, ret;
n = strlen(str);
ret = bio_gio_write(bio, str, n);
return ret;
}
G_GNUC_INTERNAL
BIO* bio_new_giostream(GIOStream *stream)
{
// TODO: make an actual new BIO type, or just switch to GTls already...
BIO *bio = BIO_new_socket(-1, BIO_NOCLOSE);
bio_gsocket_method *bio_method = g_new(bio_gsocket_method, 1);
bio_method->method = *bio->method;
bio_method->stream = stream;
bio->method->destroy(bio);
bio->method = (BIO_METHOD*)bio_method;
bio->method->bwrite = bio_gio_write;
bio->method->bread = bio_gio_read;
bio->method->bputs = bio_gio_puts;
bio->method->destroy = bio_gio_destroy;
return bio;
}
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