uclient-backend.h

   1 /*
   2  * uclient - ustream based protocol client library
   3  *
   4  * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
   5  *
   6  * Permission to use, copy, modify, and/or distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18 #ifndef __UCLIENT_INTERNAL_H
  19 #define __UCLIENT_INTERNAL_H
  20
  21 struct uclient_url;
  22
  23 struct uclient_backend {
  24         const char * const * prefix;
  25
  26         struct uclient *(*alloc)(void);
  27         void (*free)(struct uclient *cl);
  28         void (*update_url)(struct uclient *cl);
  29
  30         int (*connect)(struct uclient *cl);
  31         int (*request)(struct uclient *cl);
  32         void (*disconnect)(struct uclient *cl);
  33
  34         int (*read)(struct uclient *cl, char *buf, unsigned int len);
  35         int (*write)(struct uclient *cl, char *buf, unsigned int len);
  36 };
  37
  38 void uclient_backend_set_error(struct uclient *cl, int code);
  39 void uclient_backend_set_eof(struct uclient *cl);
  40 void uclient_backend_reset_state(struct uclient *cl);
  41 struct uclient_url *uclient_get_url(const char *url_str, const char *auth_str);
  42
  43 #endif