2 meta.c -- handle the meta communication
3 Copyright (C) 2000,2001 Guus Sliepen <guus@sliepen.warande.net>,
4 2000,2001 Ivo Timmermans <itimmermans@bigfoot.com>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 $Id: meta.c,v 1.1.2.15 2001/02/25 11:09:29 guus Exp $
29 #include <sys/signal.h>
32 /* This line must be below the rest for FreeBSD */
33 #include <sys/socket.h>
35 #ifdef HAVE_OPENSSL_EVP_H
36 # include <openssl/evp.h>
42 #include "connection.h"
46 int send_meta(connection_t *cl, char *buffer, int length)
48 char outbuf[MAXBUFSIZE];
52 if(debug_lvl >= DEBUG_META)
53 syslog(LOG_DEBUG, _("Sending %d bytes of metadata to %s (%s): %s"), length,
54 cl->name, cl->hostname, buffer);
56 buffer[length-1]='\n';
58 if(cl->status.encryptout)
60 EVP_EncryptUpdate(cl->cipher_outctx, outbuf, &outlen, buffer, length);
67 if(write(cl->meta_socket, bufp, length) < 0)
69 syslog(LOG_ERR, _("Sending meta data to %s (%s) failed: %m"), cl->name, cl->hostname);
76 void broadcast_meta(connection_t *cl, char *buffer, int length)
81 for(node = connection_tree->head; node; node = node->next)
83 p = (connection_t *)node->data;
84 if(p != cl && p->status.meta && p->status.active)
85 send_meta(p, buffer, length);
90 int receive_meta(connection_t *cl)
95 char inbuf[MAXBUFSIZE];
98 if(getsockopt(cl->meta_socket, SOL_SOCKET, SO_ERROR, &x, &l) < 0)
100 syslog(LOG_ERR, _("This is a bug: %s:%d: %d:%m %s (%s)"), __FILE__, __LINE__, cl->meta_socket,
101 cl->name, cl->hostname);
106 syslog(LOG_ERR, _("Metadata socket error for %s (%s): %s"),
107 cl->name, cl->hostname, strerror(x));
111 if(cl->status.decryptin)
114 bufp = cl->buffer + cl->buflen;
116 lenin = read(cl->meta_socket, bufp, MAXBUFSIZE - cl->buflen);
122 if(debug_lvl >= DEBUG_CONNECTIONS)
123 syslog(LOG_NOTICE, _("Connection closed by %s (%s)"),
124 cl->name, cl->hostname);
130 syslog(LOG_ERR, _("Metadata socket read error for %s (%s): %m"),
131 cl->name, cl->hostname);
136 if(cl->status.decryptin)
138 EVP_DecryptUpdate(cl->cipher_inctx, cl->buffer + cl->buflen, &lenin, inbuf, lenin);
148 for(i = oldlen; i < cl->buflen; i++)
150 if(cl->buffer[i] == '\n')
152 cl->buffer[i] = 0; /* replace end-of-line by end-of-string so we can use sscanf */
160 if(debug_lvl >= DEBUG_META)
161 syslog(LOG_DEBUG, _("Got request from %s (%s): %s"),
162 cl->name, cl->hostname, cl->buffer);
164 if(receive_request(cl))
167 cl->buflen -= cl->reqlen;
168 memmove(cl->buffer, cl->buffer + cl->reqlen, cl->buflen);
177 if(cl->buflen >= MAXBUFSIZE)
179 syslog(LOG_ERR, _("Metadata read buffer overflow for %s (%s)"),
180 cl->name, cl->hostname);
184 cl->last_ping_time = time(NULL);