perl/client.h

   1 /*
   2  * Copyright (c) 2014 Alexander Golovko <alexandro@onsec.ru>
   3  * All rights reserved.
   4  * Portions (c) 2015 Matthias Bethke <matthias@towiski.de>
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions are met:
   8  *
   9  * 1. Redistributions of source code must retain the above copyright notice,
  10  *    this list of conditions and the following disclaimer.
  11  *
  12  * 2. Redistributions in binary form must reproduce the above copyright notice,
  13  *    this list of conditions and the following disclaimer in the documentation
  14  *    and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  17  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  20  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #ifndef __NSCANG_CLIENT_H
  30 #define __NSCANG_CLIENT_H
  31
  32 #include <openssl/ssl.h>
  33 #include <openssl/err.h>
  34
  35 #include "uthash.h"
  36
  37 typedef enum { NSCANG_STATE_NONE=0, NSCANG_STATE_NEW, NSCANG_STATE_MOIN } nscang_state_t;
  38 typedef enum { NSCANG_RESP_MOIN=1, NSCANG_RESP_OKAY } nscang_response_t;
  39 typedef enum {
  40         NSCANG_ERROR_MALLOC=1,
  41         NSCANG_ERROR_TIMEOUT,
  42         NSCANG_ERROR_TOO_LONG_RESPONSE,
  43         NSCANG_ERROR_BAD_PROTO_VERSION,
  44         NSCANG_ERROR_PROTOCOL_MISMATCH,
  45         NSCANG_ERROR_UNKNOWN_RESPONSE,
  46         NSCANG_ERROR_BAIL,
  47         NSCANG_ERROR_FAIL,
  48         NSCANG_ERROR_BAD_STATE,
  49         NSCANG_ERROR_SSL_CTX_CREATE=101,
  50         NSCANG_ERROR_SSL_CIPHERS,
  51         NSCANG_ERROR_SSL_BIO_CREATE,
  52         NSCANG_ERROR_SSL_CREATE,
  53         NSCANG_ERROR_SSL
  54 } nscang_error_t;
  55
  56 typedef struct {
  57         SSL_CTX *ssl_ctx;
  58         BIO *bio;
  59         SSL *ssl;
  60         nscang_state_t state;
  61
  62         char *identity;
  63         char *psk;
  64
  65         nscang_error_t _errno;
  66         char errstr[1024];
  67
  68         UT_hash_handle hh;
  69 } nscang_client_t;
  70
  71 int nscang_client_init(nscang_client_t *c, char *host, int port,
  72                        char *ciphers, char *identity, char *psk);
  73 void nscang_client_free(nscang_client_t *c);
  74 void nscang_client_disconnect(nscang_client_t *c);
  75 int nscang_client_send_moin(nscang_client_t *c, int timeout);
  76 int nscang_client_send_command(nscang_client_t *c, const char *command, int timeout);
  77 int nscang_client_send_push(nscang_client_t *c, char *host, char *service,
  78                             int status, char *message, int timeout);
  79 int nscang_client_send_quit(nscang_client_t *c);
  80 char *nscang_client_errstr(nscang_client_t *c, char *buf, int buf_size);
  81
  82 #endif /* __NSCANG_CLIENT_H */