2000-09-26 14:06:11 +00:00
|
|
|
/*
|
|
|
|
meta.c -- handle the meta communication
|
2001-01-07 17:09:07 +00:00
|
|
|
Copyright (C) 2000,2001 Guus Sliepen <guus@sliepen.warande.net>,
|
|
|
|
2000,2001 Ivo Timmermans <itimmermans@bigfoot.com>
|
2000-09-26 14:06:11 +00:00
|
|
|
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
|
|
it under the terms of the GNU General Public License as published by
|
|
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
|
|
(at your option) any later version.
|
|
|
|
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
GNU General Public License for more details.
|
|
|
|
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
|
|
along with this program; if not, write to the Free Software
|
|
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
|
2001-03-12 23:58:19 +00:00
|
|
|
$Id: meta.c,v 1.1.2.16 2001/03/12 23:58:19 guus Exp $
|
2000-09-26 14:06:11 +00:00
|
|
|
*/
|
|
|
|
|
|
|
|
#include "config.h"
|
2000-10-11 10:35:17 +00:00
|
|
|
#include <utils.h>
|
2001-01-05 23:53:53 +00:00
|
|
|
#include <avl_tree.h>
|
2000-09-26 14:06:11 +00:00
|
|
|
|
2000-10-11 10:35:17 +00:00
|
|
|
#include <errno.h>
|
|
|
|
#include <syslog.h>
|
|
|
|
#include <sys/signal.h>
|
2000-10-29 00:02:20 +00:00
|
|
|
#include <unistd.h>
|
|
|
|
#include <string.h>
|
2000-11-15 13:33:27 +00:00
|
|
|
/* This line must be below the rest for FreeBSD */
|
|
|
|
#include <sys/socket.h>
|
2000-10-11 10:35:17 +00:00
|
|
|
|
2000-11-15 01:06:13 +00:00
|
|
|
#ifdef HAVE_OPENSSL_EVP_H
|
|
|
|
# include <openssl/evp.h>
|
|
|
|
#else
|
|
|
|
# include <evp.h>
|
|
|
|
#endif
|
|
|
|
|
2000-10-11 10:35:17 +00:00
|
|
|
#include "net.h"
|
2000-11-20 19:12:17 +00:00
|
|
|
#include "connection.h"
|
2000-10-11 10:35:17 +00:00
|
|
|
#include "system.h"
|
2000-10-29 00:02:20 +00:00
|
|
|
#include "protocol.h"
|
2000-10-11 10:35:17 +00:00
|
|
|
|
2000-11-20 19:12:17 +00:00
|
|
|
int send_meta(connection_t *cl, char *buffer, int length)
|
2000-09-26 14:06:11 +00:00
|
|
|
{
|
|
|
|
char outbuf[MAXBUFSIZE];
|
|
|
|
char *bufp;
|
2000-10-11 10:35:17 +00:00
|
|
|
int outlen;
|
2000-09-26 14:06:11 +00:00
|
|
|
cp
|
|
|
|
if(debug_lvl >= DEBUG_META)
|
2000-10-11 10:35:17 +00:00
|
|
|
syslog(LOG_DEBUG, _("Sending %d bytes of metadata to %s (%s): %s"), length,
|
2000-09-26 14:06:11 +00:00
|
|
|
cl->name, cl->hostname, buffer);
|
|
|
|
|
2000-10-15 00:59:37 +00:00
|
|
|
buffer[length-1]='\n';
|
2000-10-29 22:55:15 +00:00
|
|
|
|
2000-09-26 14:06:11 +00:00
|
|
|
if(cl->status.encryptout)
|
|
|
|
{
|
2000-10-11 10:35:17 +00:00
|
|
|
EVP_EncryptUpdate(cl->cipher_outctx, outbuf, &outlen, buffer, length);
|
2000-09-26 14:06:11 +00:00
|
|
|
bufp = outbuf;
|
2000-10-29 22:55:15 +00:00
|
|
|
length = outlen;
|
2000-09-26 14:06:11 +00:00
|
|
|
}
|
|
|
|
else
|
2000-10-29 22:55:15 +00:00
|
|
|
bufp = buffer;
|
2000-09-26 14:06:11 +00:00
|
|
|
|
|
|
|
if(write(cl->meta_socket, bufp, length) < 0)
|
|
|
|
{
|
|
|
|
syslog(LOG_ERR, _("Sending meta data to %s (%s) failed: %m"), cl->name, cl->hostname);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
cp
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2000-11-20 19:12:17 +00:00
|
|
|
void broadcast_meta(connection_t *cl, char *buffer, int length)
|
2000-09-26 14:06:11 +00:00
|
|
|
{
|
2001-01-05 23:53:53 +00:00
|
|
|
avl_node_t *node;
|
2000-11-20 19:12:17 +00:00
|
|
|
connection_t *p;
|
2000-09-26 14:06:11 +00:00
|
|
|
cp
|
2001-01-05 23:53:53 +00:00
|
|
|
for(node = connection_tree->head; node; node = node->next)
|
2000-11-20 19:12:17 +00:00
|
|
|
{
|
2001-01-05 23:53:53 +00:00
|
|
|
p = (connection_t *)node->data;
|
2000-11-20 19:12:17 +00:00
|
|
|
if(p != cl && p->status.meta && p->status.active)
|
|
|
|
send_meta(p, buffer, length);
|
|
|
|
}
|
2000-09-26 14:06:11 +00:00
|
|
|
cp
|
|
|
|
}
|
|
|
|
|
2000-11-20 19:12:17 +00:00
|
|
|
int receive_meta(connection_t *cl)
|
2000-09-26 14:06:11 +00:00
|
|
|
{
|
|
|
|
int x, l = sizeof(x);
|
|
|
|
int oldlen, i;
|
|
|
|
int lenin = 0;
|
|
|
|
char inbuf[MAXBUFSIZE];
|
|
|
|
char *bufp;
|
2001-03-12 23:58:19 +00:00
|
|
|
int decrypted = 0;
|
2000-09-26 14:06:11 +00:00
|
|
|
cp
|
|
|
|
if(getsockopt(cl->meta_socket, SOL_SOCKET, SO_ERROR, &x, &l) < 0)
|
|
|
|
{
|
|
|
|
syslog(LOG_ERR, _("This is a bug: %s:%d: %d:%m %s (%s)"), __FILE__, __LINE__, cl->meta_socket,
|
|
|
|
cl->name, cl->hostname);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if(x)
|
|
|
|
{
|
|
|
|
syslog(LOG_ERR, _("Metadata socket error for %s (%s): %s"),
|
|
|
|
cl->name, cl->hostname, strerror(x));
|
|
|
|
return -1;
|
|
|
|
}
|
2000-10-29 22:55:15 +00:00
|
|
|
|
2001-03-12 23:58:19 +00:00
|
|
|
lenin = read(cl->meta_socket, cl->buffer + cl->buflen, MAXBUFSIZE - cl->buflen);
|
2000-09-26 14:06:11 +00:00
|
|
|
|
|
|
|
if(lenin<=0)
|
|
|
|
{
|
2001-02-25 11:09:29 +00:00
|
|
|
if(lenin==0)
|
2000-09-26 14:06:11 +00:00
|
|
|
{
|
2000-10-21 11:52:08 +00:00
|
|
|
if(debug_lvl >= DEBUG_CONNECTIONS)
|
2000-09-26 14:06:11 +00:00
|
|
|
syslog(LOG_NOTICE, _("Connection closed by %s (%s)"),
|
|
|
|
cl->name, cl->hostname);
|
|
|
|
}
|
|
|
|
else
|
2001-02-25 11:09:29 +00:00
|
|
|
if(errno==EINTR)
|
|
|
|
return 0;
|
|
|
|
else
|
|
|
|
syslog(LOG_ERR, _("Metadata socket read error for %s (%s): %m"),
|
|
|
|
cl->name, cl->hostname);
|
|
|
|
|
2000-09-26 14:06:11 +00:00
|
|
|
return -1;
|
|
|
|
}
|
2000-10-29 22:55:15 +00:00
|
|
|
|
2000-09-26 14:06:11 +00:00
|
|
|
oldlen = cl->buflen;
|
|
|
|
cl->buflen += lenin;
|
|
|
|
|
2001-03-12 23:58:19 +00:00
|
|
|
while(lenin)
|
2000-09-26 14:06:11 +00:00
|
|
|
{
|
2001-03-12 23:58:19 +00:00
|
|
|
if(cl->status.decryptin && !decrypted)
|
|
|
|
{
|
|
|
|
EVP_DecryptUpdate(cl->cipher_inctx, inbuf, &lenin, cl->buffer + oldlen, lenin);
|
|
|
|
memcpy(cl->buffer + oldlen, inbuf, lenin);
|
|
|
|
decrypted = 1;
|
|
|
|
}
|
|
|
|
|
2000-09-26 14:06:11 +00:00
|
|
|
cl->reqlen = 0;
|
|
|
|
|
|
|
|
for(i = oldlen; i < cl->buflen; i++)
|
|
|
|
{
|
|
|
|
if(cl->buffer[i] == '\n')
|
|
|
|
{
|
|
|
|
cl->buffer[i] = 0; /* replace end-of-line by end-of-string so we can use sscanf */
|
|
|
|
cl->reqlen = i + 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if(cl->reqlen)
|
|
|
|
{
|
2000-10-24 15:46:18 +00:00
|
|
|
if(debug_lvl >= DEBUG_META)
|
2000-09-26 14:06:11 +00:00
|
|
|
syslog(LOG_DEBUG, _("Got request from %s (%s): %s"),
|
|
|
|
cl->name, cl->hostname, cl->buffer);
|
|
|
|
|
|
|
|
if(receive_request(cl))
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
cl->buflen -= cl->reqlen;
|
2001-03-12 23:58:19 +00:00
|
|
|
lenin -= cl->reqlen;
|
2000-09-26 14:06:11 +00:00
|
|
|
memmove(cl->buffer, cl->buffer + cl->reqlen, cl->buflen);
|
|
|
|
oldlen = 0;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if(cl->buflen >= MAXBUFSIZE)
|
|
|
|
{
|
|
|
|
syslog(LOG_ERR, _("Metadata read buffer overflow for %s (%s)"),
|
|
|
|
cl->name, cl->hostname);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
cl->last_ping_time = time(NULL);
|
|
|
|
cp
|
|
|
|
return 0;
|
|
|
|
}
|