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/*-
* Copyright (c) 1998-2005 Joao Cabral
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* DHIS(c) Dynamic Host Information System Release 5
*/
#define MAX_MSG 256
typedef struct {
int opcode;
int serial;
int version;
int rport;
} header4_t;
typedef struct {
int opcode;
int serial;
int version;
int rport;
int hostid;
} header_t;
typedef struct { header_t hdr;
char buff[MAX_MSG-sizeof(header_t)];
} msg_t;
/* R3 messages */
typedef struct { header4_t hdr; int id; int pass; } r3_online_req_t;
typedef struct { header4_t hdr; int id; int pass; } r3_offline_req_t;
/* R4 messages */
typedef struct { header4_t hdr; } r4_echo_req_t;
typedef struct { header4_t hdr; int oserial; } r4_echo_ack_t;
typedef struct { header4_t hdr; int id; char pass[16]; } r4_auth_req_t;
typedef struct { header4_t hdr; } r4_auth_deny_t;
typedef struct { header4_t hdr; int sid; } r4_auth_ack_t;
typedef struct { header4_t hdr; int id; char x[200]; } r4_auth_sendx_t;
typedef struct { header4_t hdr; char y[200]; } r4_auth_sendy_t;
typedef struct { header4_t hdr; int next_check; } r4_check_req_t;
typedef struct { header4_t hdr; int sid; } r4_check_ack_t;
typedef struct { header4_t hdr; int sid; } r4_offline_req_t;
/* R5 messages */
typedef struct { header_t hdr; } echo_req_t;
typedef struct { header_t hdr; int oserial; } echo_ack_t;
typedef struct { header_t hdr; char pass[16];int refresh; } auth_req_t;
typedef struct { header_t hdr; } auth_deny_t;
typedef struct { header_t hdr; int sid; } auth_ack_t;
typedef struct { header_t hdr; int sid; int raddr; } auth_ack_51_t;
typedef struct { header_t hdr; char x[200]; } auth_sendx_t;
typedef struct { header_t hdr; char y[200]; } auth_sendy_t;
typedef struct { header_t hdr; int next_check; } check_req_t;
typedef struct { header_t hdr; int sid; } check_ack_t;
typedef struct { header_t hdr; int sid; } offline_req_t;
int msg_size_by_opcode(int);
void swap_int(int *);
void swap_msg(int *,int);
int little_endian(void);
void convert_message(msg_t *,int);
int get_serial(void);
int net_init(int);
int net_close(void);
int net_check_message(void);
int net_read_message(msg_t *,int *);
int net_write_message(msg_t *,int,int);
/* QRC functions */
void qrc_random(mpz_t,int);
void qrc_genkey(mpz_t);
void qrc_genx(mpz_t,mpz_t);
void qrc_geny(mpz_t,mpz_t,mpz_t);
void qrc_sqrty(mpz_t,mpz_t,mpz_t);
void qrc_crt(mpz_t,mpz_t,mpz_t,mpz_t,mpz_t);
void qrc_fill_str(mpz_t,char *,int);
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