lib/silccore/silcchannel.h

   1 /*
   2
   3   silcchannel.h
   4
   5   Author: Pekka Riikonen <priikone@poseidon.pspt.fi>
   6
   7   Copyright (C) 1997 - 2001 Pekka Riikonen
   8
   9   This program is free software; you can redistribute it and/or modify
  10   it under the terms of the GNU General Public License as published by
  11   the Free Software Foundation; either version 2 of the License, or
  12   (at your option) any later version.
  13
  14   This program is distributed in the hope that it will be useful,
  15   but WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17   GNU General Public License for more details.
  18
  19 */
  20
  21 #ifndef SILCCHANNEL_H
  22 #define SILCCHANNEL_H
  23
  24 #include "silcdlist.h"
  25
  26 /* Forward declaration for Channel Payload parsed from packet. The
  27    actual structure is defined in source file and is private data. */
  28 typedef struct SilcChannelPayloadStruct *SilcChannelPayload;
  29
  30 /* Forward declaration for Channel Message Payload parsed from packet. The
  31    actual structure is defined in source file and is private data. */
  32 typedef struct SilcChannelMessagePayloadStruct *SilcChannelMessagePayload;
  33
  34 /* Forward declaration for Channel Key Payload parsed from packet. The
  35    actual structure is defined in source file and is private data. */
  36 typedef struct SilcChannelKeyPayloadStruct *SilcChannelKeyPayload;
  37
  38 /* The Message flag type */
  39 typedef unsigned short SilcMessageFlags;
  40
  41 /* The message flags (shared by both channel and private messages) */
  42 #define SILC_MESSAGE_FLAG_NONE        0x0000
  43 #define SILC_MESSAGE_FLAG_AUTOREPLY   0x0001
  44 #define SILC_MESSAGE_FLAG_NOREPLY     0x0002
  45 #define SILC_MESSAGE_FLAG_ACTION      0x0004
  46 #define SILC_MESSAGE_FLAG_RESERVED    0x0008 /* to 0x0200 */
  47 #define SILC_MESSAGE_FLAG_PRIVATE     0x0400 /* to 0x8000 */
  48
  49 /* Prototypes */
  50 SilcChannelPayload silc_channel_payload_parse(SilcBuffer buffer);
  51 SilcDList silc_channel_payload_parse_list(SilcBuffer buffer);
  52 SilcBuffer silc_channel_payload_encode(unsigned char *channel_name,
  53                                        unsigned short channel_name_len,
  54                                        unsigned char *channel_id,
  55                                        unsigned int channel_id_len,
  56                                        unsigned int mode);
  57 void silc_channel_payload_free(SilcChannelPayload payload);
  58 void silc_channel_payload_list_free(SilcDList list);
  59 unsigned char *silc_channel_get_name(SilcChannelPayload payload,
  60                                      unsigned int *channel_name_len);
  61 unsigned char *silc_channel_get_id(SilcChannelPayload payload,
  62                                    unsigned int *channel_id_len);
  63 SilcChannelID *silc_channel_get_id_parse(SilcChannelPayload payload);
  64 unsigned int silc_channel_get_mode(SilcChannelPayload payload);
  65 int silc_channel_message_payload_decrypt(unsigned char *data,
  66                                          size_t data_len,
  67                                          SilcCipher cipher,
  68                                          SilcHmac hmac);
  69 SilcChannelMessagePayload
  70 silc_channel_message_payload_parse(SilcBuffer buffer,
  71                                    SilcCipher cipher,
  72                                    SilcHmac hmac);
  73 SilcBuffer silc_channel_message_payload_encode(unsigned short flags,
  74                                                unsigned short data_len,
  75                                                unsigned char *data,
  76                                                unsigned short iv_len,
  77                                                unsigned char *iv,
  78                                                SilcCipher cipher,
  79                                                SilcHmac hmac);
  80 void silc_channel_message_payload_free(SilcChannelMessagePayload payload);
  81 unsigned short
  82 silc_channel_message_get_flags(SilcChannelMessagePayload payload);
  83 unsigned char *silc_channel_message_get_data(SilcChannelMessagePayload payload,
  84                                      unsigned int *data_len);
  85 unsigned char *silc_channel_message_get_mac(SilcChannelMessagePayload payload);
  86 unsigned char *silc_channel_message_get_iv(SilcChannelMessagePayload payload);
  87 SilcChannelKeyPayload silc_channel_key_payload_parse(SilcBuffer buffer);
  88 SilcBuffer silc_channel_key_payload_encode(unsigned short id_len,
  89                                            unsigned char *id,
  90                                            unsigned short cipher_len,
  91                                            unsigned char *cipher,
  92                                            unsigned short key_len,
  93                                            unsigned char *key);
  94 void silc_channel_key_payload_free(SilcChannelKeyPayload payload);
  95 unsigned char *silc_channel_key_get_id(SilcChannelKeyPayload payload,
  96                                        unsigned int *id_len);
  97 unsigned char *silc_channel_key_get_cipher(SilcChannelKeyPayload payload,
  98                                            unsigned int *cipher_len);
  99 unsigned char *silc_channel_key_get_key(SilcChannelKeyPayload payload,
 100                                         unsigned int *key_len);
 101
 102 #endif