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/*
* decode_postgresql.c
*
* PostgreSQL.
*
* Thanks to Eric Jackson <shinobi@monkey.org> for packet traces.
*
* Copyright (c) 2000 Dug Song <dugsong@monkey.org>
*
* $Id: decode_postgresql.c,v 1.6 2001/03/15 08:33:02 dugsong Exp $
*/
#include "config.h"
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include "decode.h"
#define STARTUP_PKTLEN 296
int
decode_postgresql(u_char *buf, int len, u_char *obuf, int olen)
{
u_int32_t plen;
u_char *p;
char *db, *user;
if (len < STARTUP_PKTLEN)
return (0);
obuf[0] = '\0';
db = user = NULL;
for (;;) {
if (len < 4) break;
plen = pntohl(buf);
if (plen > len) break;
p = buf + 4;
if (plen == STARTUP_PKTLEN) {
if (pntohl(p) >> 16 == 2) {
db = p + 4; db[63] = '\0';
user = db + 64; user[31] = '\0';
}
}
else if (db != NULL && user != NULL) {
buf[plen - 1] = '\0';
snprintf(obuf + strlen(obuf),
olen - strlen(obuf),
"%s\n%s\n%s\n", db, user, p);
db = user = NULL;
}
buf += plen;
len -= plen;
}
return (strlen(obuf));
}
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