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/*
// AUTHOR
// N. Nielsen
//
// VERSION
// 0.2
//
// LICENSE
// This software is in the public domain.
//
// The software is provided "as is", without warranty of any kind,
// express or implied, including but not limited to the warranties
// of merchantability, fitness for a particular purpose, and
// noninfringement. In no event shall the author(s) be liable for any
// claim, damages, or other liability, whether in an action of
// contract, tort, or otherwise, arising from, out of, or in connection
// with the software or the use or other dealings in the software.
//
// SUPPORT
// Send bug reports to: <nielsen@memberwebs.com>
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <db.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <fcntl.h>
#include <netinet/in.h>
void readIps(FILE* fIn);
void writeIps(FILE* fOut);
/* DB of traffic accessed recently */
DB* g_db = NULL;
/* TODO: Use an actual compare function */
int main(int argc, char* argv[])
{
BTREEINFO bi;
memset(&bi, 0, sizeof(bi));
/* bi.compare = compareIp; */
g_db = dbopen(NULL, O_CREAT | O_RDWR, 0, DB_BTREE, (const void*)&bi);
if(g_db == NULL)
errx(1, "db initialization failed");
readIps(stdin);
writeIps(stdout);
}
/*
* Parse helpers
*/
static void eatSpace(FILE* file)
{
char ch;
do
{
ch = getc(file);
if(ch == '#')
{
while(ch != '\n')
ch = getc(file);
}
}
while(isspace(ch) && !feof(file) && !ferror(file));
ungetc(ch, file);
}
/*
* Read Input
*/
void readIps(FILE* fIn)
{
DBT key, value;
struct in_addr addr;
char address[16];
key.data = &addr;
key.size = sizeof(addr);
value.data = &addr;
value.size = sizeof(addr);
eatSpace(fIn);
while(!feof(fIn) && !ferror(fIn))
{
char ch;
int i = 0;
/* Read a word and store the first 16 chars */
while(!feof(fIn) && !ferror(fIn))
{
ch = fgetc(fIn);
if(isspace(ch))
break;
if(i < 16)
address[i] = ch;
i++;
}
address[i] = 0;
if(!inet_pton(AF_INET, address, (void*)&addr))
warnx("invalid ip in address: %s", address);
if(g_db->put(g_db, &key, &value, 0) < 0)
err(1, "database error: %s\n");
eatSpace(fIn);
}
if(ferror(fIn))
err(1, "error reading addresses");
}
/*
* Write collated output back out
*/
void writeIps(FILE* fOut)
{
DBT key, value;
int ret;
struct in_addr prev; /* The previous address */
struct in_addr top; /* The address at the top of the current stack */
int size; /* The stack size */
memset(&key, 0, sizeof(key));
memset(&value, 0, sizeof(value));
/* Get first key from DB */
ret = g_db->seq(g_db, &key, &value, R_FIRST);
while(ret == 0)
{
printf("%s\n", inet_ntoa(*((struct in_addr*)key.data)));
ret = g_db->seq(g_db, &key, &value, R_NEXT);
}
}
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