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/*
 * libZRTP SDK library, implements the ZRTP secure VoIP protocol.
 * Copyright (c) 2006-2009 Philip R. Zimmermann.  All rights reserved.
 * Contact: http://philzimmermann.com
 * For licensing and other legal details, see the file zrtp_legal.c.
 * 
 * Viktor Krykun <v.krikun at zfoneproject.com> 
 */


#ifndef __ZRTP_ERROR_H__
#define __ZRTP_ERROR_H__

#include "zrtp_config.h"

typedef enum zrtp_protocol_error_t
{
    zrtp_error_unknown          = 0,
    zrtp_error_timeout          = 1,
    
    zrtp_error_invalid_packet   = 0x10, 
    zrtp_error_software         = 0x20, 
    zrtp_error_version          = 0x30, 
    zrtp_error_hello_mistmatch  = 0x40, 
    zrtp_error_hash_unsp        = 0x51, 
    zrtp_error_cipher_unsp      = 0x52, 
    zrtp_error_pktype_unsp      = 0x53, 
    zrtp_error_auth_unsp        = 0x54, 
    zrtp_error_sas_unsp         = 0x55, 
    zrtp_error_no_secret        = 0x56, 
    zrtp_error_possible_mitm1   = 0x61, 
    zrtp_error_possible_mitm2   = 0x62, 
    zrtp_error_possible_mitm3   = 0x63, 
    zrtp_error_auth_decrypt     = 0x70, 
    zrtp_error_nonse_reuse      = 0x80, 
    zrtp_error_equal_zid        = 0x90, 
    zrtp_error_service_unavail  = 0xA0, 
    zrtp_error_goclear_unsp     = 0x100,
    zrtp_error_wrong_zid        = 0x202, 
    zrtp_error_wrong_meshmac    = 0x203, 
    zrtp_error_count
} zrtp_protocol_error_t;

typedef enum zrtp_status_t
{
    zrtp_status_ok           = 0,   
    zrtp_status_fail         = 1,   
    zrtp_status_bad_param    = 2,   
    zrtp_status_alloc_fail   = 3,   
    zrtp_status_auth_fail    = 4,   
    zrtp_status_cipher_fail  = 5,   
    zrtp_status_algo_fail    = 6,   
    zrtp_status_key_expired  = 7,   
    zrtp_status_buffer_size  = 8,   
    zrtp_status_drop         = 9,   
    zrtp_status_open_fail    = 10,  
    zrtp_status_read_fail    = 11,  
    zrtp_status_write_fail   = 12,  
    zrtp_status_old_pkt      = 13,  
    zrtp_status_rp_fail      = 14,  
    zrtp_status_zrp_fail     = 15,  
    zrtp_status_crc_fail     = 16,  
    zrtp_status_rng_fail     = 17,  
    zrtp_status_wrong_state  = 18,  
    zrtp_status_attack       = 19,  
    zrtp_status_notavailable = 20,  
    zrtp_status_count        = 21
} zrtp_status_t;

#define ZRTP_MIM2_WARNING_STR \
    "Possible Man-In-The-Middle-Attack! Switching to state Error\n"\
    "because a packet arrived that was ZRTP_DHPART2, but contained\n"\
    "a g^y that didn't match the previous ZRTP_COMMIT.\n"

#define ZRTP_MITM1_WARNING_STR "DH validating failed. (pvi is 1 or p-1), aborted\n"

#define ZRTP_VERIFIED_INIT_WARNING_STR \
    "Falling back to cleartext because a packet arrived that was\n"\
    "ZRTP_CONFIRM1, but which couldn't be verified - the sender must have a different\n"\
    "shared secret than we have.\n"

#define ZRTP_VERIFIED_RESP_WARNING_STR \
    "Falling back to cleartext because a packet arrived that was ZRTP_CONFIRM2,\n"\
    " but which couldn't be verified - the sender must have a different shared secret than we have.\n"

#define ZRTP_EQUAL_ZID_WARNING_STR \
    "Received a ZRTP_HELLO packet with the same ZRTP ID that we have.\n"\
    " This is likely due to a bug in the software. Ignoring the ZRTP_HELLO\n"\
    " packet, therefore this call cannot be encrypted.\n"

#define ZRTP_UNSUPPORTED_COMP_WARNING_STR \
    " Received ZRTP_HELLO packet with an algorithms field which had a\n"\
    " list of hashes that didn't include any of our supported hashes. Ignoring\n"\
    " the ZRTP_HELLO packet, therefore this call cannot be encrypted.\n"
    
#define ZRTP_NOT_UNIQUE_NONCE_WARNING_STR \
    " Received COMMIT with hash value already used in another stream within this ZRTP session\n"

#define ZRTP_RELAYED_SAS_FROM_NONMITM_STR \
" Received SAS Relaying message from endpoint which haven't introduced as MiTM.\n"

#endif /* __ZRTP_ERROR_H__ */

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