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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 <string.h>
#include <libubox/ustream.h>
#include "ustream-ssl.h"
#include "ustream-internal.h"
static int
s_ustream_new(BIO *b)
{
b->init = 1;
b->num = 0;
b->ptr = NULL;
b->flags = 0;
return 1;
}
static int
s_ustream_free(BIO *b)
{
if (!b)
return 0;
b->ptr = NULL;
b->init = 0;
b->flags = 0;
return 1;
}
static int
s_ustream_read(BIO *b, char *buf, int len)
{
struct ustream *s;
char *sbuf;
int slen;
if (!buf || len <= 0)
return 0;
s = (struct ustream *)b->ptr;
if (!s)
return 0;
sbuf = ustream_get_read_buf(s, &slen);
BIO_clear_retry_flags(b);
if (!slen) {
BIO_set_retry_read(b);
return -1;
}
if (slen > len)
slen = len;
memcpy(buf, sbuf, slen);
ustream_consume(s, slen);
return slen;
}
static int
s_ustream_write(BIO *b, const char *buf, int len)
{
struct ustream *s;
if (!buf || len <= 0)
return 0;
s = (struct ustream *)b->ptr;
if (!s)
return 0;
if (s->write_error)
return len;
return ustream_write(s, buf, len, false);
}
static int
s_ustream_gets(BIO *b, char *buf, int len)
{
return -1;
}
static int
s_ustream_puts(BIO *b, const char *str)
{
return s_ustream_write(b, str, strlen(str));
}
static long s_ustream_ctrl(BIO *b, int cmd, long num, void *ptr)
{
switch (cmd) {
case BIO_CTRL_FLUSH:
return 1;
default:
return 0;
};
}
static BIO_METHOD methods_ustream = {
100 | BIO_TYPE_SOURCE_SINK,
"ustream",
s_ustream_write,
s_ustream_read,
s_ustream_puts,
s_ustream_gets,
s_ustream_ctrl,
s_ustream_new,
s_ustream_free,
NULL,
};
static BIO *ustream_bio_new(struct ustream *s)
{
BIO *bio;
bio = BIO_new(&methods_ustream);
bio->ptr = s;
return bio;
}
__hidden void ustream_set_io(struct ustream_ssl_ctx *ctx, void *ssl, struct ustream *conn)
{
BIO *bio = ustream_bio_new(conn);
SSL_set_bio(ssl, bio, bio);
}
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