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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sqlite3.h>
#include "PICA_nodeaddrlist.h"
#include "PICA_log.h"
#define PREFIX4 htonl(0xf0000000U)
#define PREFIX8 htonl(0xff000000U)
#define PREFIX12 htonl(0xfff00000U)
#define PREFIX16 htonl(0xffff0000U)
#define PREFIX24 htonl(0xffffff00U)
#define MAKEIP(a, b, c, d) (htonl( (a&0xFF) << 24 | (b&0xFF) << 16 | (c&0xFF) << 8 | (d&0xFF) ))
struct cb_param
{
struct PICA_nodeaddr **n_addr;
int *N;
};
int PICA_is_reserved_addr_ipv4(in_addr_t addr)
{
if ((addr & PREFIX8) == 0 //0.0.0.0/8
|| (addr & PREFIX8) == MAKEIP(10, 0, 0, 0) //10.0.0.0/8
|| (addr & PREFIX8) == MAKEIP(127, 0, 0, 0)//127.0.0.0/8
|| (addr & PREFIX16) == MAKEIP(169, 254, 0, 0) //169.254.0.0/16
|| (addr & PREFIX12) == MAKEIP(172, 16, 0, 0) //172.16.0.0/12
|| (addr & PREFIX16) == MAKEIP(192, 168, 0, 0) //192.168.0.0/16
|| (addr & PREFIX4) == MAKEIP(224, 0, 0, 0) //224.0.0.0/4
|| (addr & PREFIX4) == MAKEIP(240, 0, 0, 0) //240.0.0.0/4
|| addr == INADDR_BROADCAST
)
return 1;
return 0;
}
static int nodeaddr_load_sqlite_cb(void *p, int argc, char **argv, char **ColName)
{
struct cb_param *cp = (struct cb_param*)p;
struct PICA_nodeaddr *na;
if (argc != 4)
return 1;
na = (struct PICA_nodeaddr *)malloc(sizeof(struct PICA_nodeaddr));
if (!na)
return 1;
PICA_debug1("node address loaded: addr: %s port %s\n", argv[0], argv[1]);//debug
strncpy(na->addr, argv[0], 255);
na->addr[255] = '\0';
na->port = atoi(argv[1]);
na->inactive_count = atoi(argv[2]);
na->last_active = atoi(argv[3]);
na->next = *(cp->n_addr);
*(cp->n_addr) = na;
(*(cp->N))++;
return 0;
}
int PICA_nodeaddr_list_load(const char* dbfilename,struct PICA_nodeaddr **list_head)
{
int N=0, ret;
sqlite3 *db;
char *zErrMsg = 0;
const char query[] = "select address, port, inactive_count, last_active from nodes order by inactive_count desc, last_active asc";
struct cb_param p = {list_head, &N};
ret = sqlite3_open_v2(dbfilename, &db, SQLITE_OPEN_READWRITE, NULL);
if (ret != SQLITE_OK)
{
PICA_fatal( "Can't open nodelist database (%s): %s\n", dbfilename, sqlite3_errmsg(db));
sqlite3_close(db);
return -1;
}
ret = sqlite3_exec(db, query, nodeaddr_load_sqlite_cb, &p, &zErrMsg);
if( ret != SQLITE_OK )
{
PICA_error("SQL error: %s\n", zErrMsg);
sqlite3_free(zErrMsg);
}
sqlite3_close(db);
return N;
}
int PICA_nodeaddr_update(const char* dbfilename, struct PICA_nodeaddr *naddr, int is_alive)
{
sqlite3 *db;
sqlite3_stmt *stmt;
int ret;
const char q1[] = "update nodes set last_active = strftime('%s','now'), inactive_count = 0 where address = :addr and port = :port";
const char q2[] = "update nodes set inactive_count = inactive_count + 1 where address = :addr and port = :port";
char *query;
query = is_alive ? q1 : q2;
ret = sqlite3_open(dbfilename, &db);
if (ret != SQLITE_OK)
{
PICA_error("Can't open nodelist database: %s\n", sqlite3_errmsg(db));
sqlite3_close(db);
return -1;
}
ret = sqlite3_prepare_v2(db, query, -1, &stmt, NULL);
if (ret != SQLITE_OK)
{
PICA_error("Can't prepare SQLite statement: %s\n", sqlite3_errmsg(db));
sqlite3_close(db);
return -1;
}
ret = sqlite3_bind_text(stmt, 1, naddr->addr, -1, SQLITE_STATIC);
if (ret != SQLITE_OK)
{
PICA_error("Can't bind address value: %s\n", sqlite3_errmsg(db));
sqlite3_finalize(stmt);
sqlite3_close(db);
return -1;
}
ret = sqlite3_bind_int(stmt, 2, naddr->port);
if (ret != SQLITE_OK)
{
PICA_error("Can't bind port value: %s\n", sqlite3_errmsg(db));
sqlite3_finalize(stmt);
sqlite3_close(db);
return -1;
}
ret = sqlite3_step(stmt);
if (ret !=SQLITE_DONE)
{
PICA_error( "Can't execute query: %s\n", sqlite3_errmsg(db));
sqlite3_finalize(stmt);
sqlite3_close(db);
return -1;
}
sqlite3_finalize(stmt);
sqlite3_close(db);
return 1;
}
int PICA_nodeaddr_save(const char* dbfilename, struct PICA_nodeaddr *naddr)
{
sqlite3 *db;
sqlite3_stmt *stmt;
int ret;
const char query[] = "insert into nodes (address, port, last_active, inactive_count) values(:addr, :port, strftime('%s','now'), 0);";
ret = sqlite3_open(dbfilename, &db);
if (ret != SQLITE_OK)
{
PICA_error("Can't open nodelist database: %s\n", sqlite3_errmsg(db));
sqlite3_close(db);
return -1;
}
ret = sqlite3_prepare_v2(db, query, -1, &stmt, NULL);
if (ret != SQLITE_OK)
{
PICA_error("Can't prepare SQLite statement: %s\n", sqlite3_errmsg(db));
sqlite3_close(db);
return -1;
}
ret = sqlite3_bind_text(stmt, 1, naddr->addr, -1, SQLITE_STATIC);
if (ret != SQLITE_OK)
{
PICA_error("Can't bind address value: %s\n", sqlite3_errmsg(db));
sqlite3_finalize(stmt);
sqlite3_close(db);
return -1;
}
ret = sqlite3_bind_int(stmt, 2, naddr->port);
if (ret != SQLITE_OK)
{
PICA_error("Can't bind port value: %s\n", sqlite3_errmsg(db));
sqlite3_finalize(stmt);
sqlite3_close(db);
return -1;
}
ret = sqlite3_step(stmt);
if (ret !=SQLITE_DONE)
{
PICA_error( "Can't execute query: %s\n", sqlite3_errmsg(db));
sqlite3_finalize(stmt);
sqlite3_close(db);
return -1;
}
sqlite3_finalize(stmt);
sqlite3_close(db);
return 1;
}
void PICA_nodeaddr_list_free(struct PICA_nodeaddr *list_head)
{
struct PICA_nodeaddr *pp,*pn;
pp=list_head;
while(pp)
{
pn=pp->next;
free(pp);
pp=pn;
}
}
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