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 uint16 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_NOTICE      0x0008
  47 #define SILC_MESSAGE_FLAG_REQUEST     0x0010
  48 #define SILC_MESSAGE_FLAG_RESERVED    0x0020 /* to 0x0200 */
  49 #define SILC_MESSAGE_FLAG_PRIVATE     0x0400 /* to 0x8000 */
  50
  51 /* Prototypes */
  52 SilcChannelPayload silc_channel_payload_parse(SilcBuffer buffer);
  53 SilcDList silc_channel_payload_parse_list(SilcBuffer buffer);
  54 SilcBuffer silc_channel_payload_encode(unsigned char *channel_name,
  55                                        uint16 channel_name_len,
  56                                        unsigned char *channel_id,
  57                                        uint32 channel_id_len,
  58                                        uint32 mode);
  59 void silc_channel_payload_free(SilcChannelPayload payload);
  60 void silc_channel_payload_list_free(SilcDList list);
  61 unsigned char *silc_channel_get_name(SilcChannelPayload payload,
  62                                      uint32 *channel_name_len);
  63 unsigned char *silc_channel_get_id(SilcChannelPayload payload,
  64                                    uint32 *channel_id_len);
  65 SilcChannelID *silc_channel_get_id_parse(SilcChannelPayload payload);
  66 uint32 silc_channel_get_mode(SilcChannelPayload payload);
  67 int silc_channel_message_payload_decrypt(unsigned char *data,
  68                                          size_t data_len,
  69                                          SilcCipher cipher,
  70                                          SilcHmac hmac);
  71 SilcChannelMessagePayload
  72 silc_channel_message_payload_parse(SilcBuffer buffer,
  73                                    SilcCipher cipher,
  74                                    SilcHmac hmac);
  75 SilcBuffer silc_channel_message_payload_encode(uint16 flags,
  76                                                uint16 data_len,
  77                                                unsigned char *data,
  78                                                uint16 iv_len,
  79                                                unsigned char *iv,
  80                                                SilcCipher cipher,
  81                                                SilcHmac hmac);
  82 void silc_channel_message_payload_free(SilcChannelMessagePayload payload);
  83 uint16
  84 silc_channel_message_get_flags(SilcChannelMessagePayload payload);
  85 unsigned char *silc_channel_message_get_data(SilcChannelMessagePayload payload,
  86                                      uint32 *data_len);
  87 unsigned char *silc_channel_message_get_mac(SilcChannelMessagePayload payload);
  88 unsigned char *silc_channel_message_get_iv(SilcChannelMessagePayload payload);
  89 SilcChannelKeyPayload silc_channel_key_payload_parse(SilcBuffer buffer);
  90 SilcBuffer silc_channel_key_payload_encode(uint16 id_len,
  91                                            unsigned char *id,
  92                                            uint16 cipher_len,
  93                                            unsigned char *cipher,
  94                                            uint16 key_len,
  95                                            unsigned char *key);
  96 void silc_channel_key_payload_free(SilcChannelKeyPayload payload);
  97 unsigned char *silc_channel_key_get_id(SilcChannelKeyPayload payload,
  98                                        uint32 *id_len);
  99 unsigned char *silc_channel_key_get_cipher(SilcChannelKeyPayload payload,
 100                                            uint32 *cipher_len);
 101 unsigned char *silc_channel_key_get_key(SilcChannelKeyPayload payload,
 102                                         uint32 *key_len);
 103
 104 #endif