/*
protocol.c -- handle the meta-protocol
- Copyright (C) 1999 Ivo Timmermans <zarq@iname.com>
+ Copyright (C) 1999,2000 Ivo Timmermans <zarq@iname.com>
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
char buffer[MAXBUFSIZE+1];
int buflen;
+/* Outgoing request routines */
+
int send_ack(conn_list_t *cl)
{
cp
buflen = snprintf(buffer, MAXBUFSIZE, "%d %lx\n", TERMREQ, myself->vpn_ip);
- if((write(cl->meta_socket, buffer, buflen)) < 0)
+ if(write(cl->meta_socket, buffer, buflen) < 0)
{
- syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
+ if(debug_lvl > 1)
+ syslog(LOG_ERR, "send failed: %s:%d: %m", __FILE__, __LINE__);
return -1;
}
cp
return 0;
}
-void send_key_changed2(void)
+void send_key_changed_all(void)
{
conn_list_t *p;
cp
for(p = conn_list; p != NULL; p = p->next)
- if(p->status.meta && p->protocol_version > PROT_3)
+ if(p->status.meta && p->status.active)
send_key_changed(p, myself);
cp
}
conn_list_t *p;
cp
for(p = conn_list; p != NULL; p = p->next)
- if(p != new && p != source && p->status.meta)
+ if(p != new && p != source && p->status.meta && p->status.active)
function(p, new);
cp
return 0;
conn_list_t *p;
cp
for(p = conn_list; p != NULL; p = p->next)
- if(p != new && p->protocol_version > PROT_3)
+ if(p != new && p->status.active)
send_add_host(new, p);
cp
return 0;
return -1;
send_passphrase(cl);
}
-
- cl->status.active = 0;
cp
return 0;
}
int passphrase_h(conn_list_t *cl)
{
cp
- cl->pp=xmalloc(sizeof(*(cl->pp)));
+ cl->pp = xmalloc(sizeof(*(cl->pp)));
+
if(sscanf(cl->buffer, "%*d %as", &(cl->pp->phrase)) != 1)
{
syslog(LOG_ERR, "got bad PASSPHRASE request: %s", cl->buffer);
int public_key_h(conn_list_t *cl)
{
char *g_n;
+ conn_list_t *old;
cp
if(sscanf(cl->buffer, "%*d %as", &g_n) != 1)
{
else
send_ack(cl);
+ /* Okay, before we active the connection, we check if there is another entry
+ in the connection list with the same vpn_ip. If so, it presumably is an
+ old connection that has timed out but we don't know it yet. Because our
+ conn_list entry is not active, lookup_conn will skip ourself. */
+
+ while(old=lookup_conn(cl->vpn_ip))
+ terminate_connection(old);
+
cl->status.active = 1;
notify_others(cl, NULL, send_add_host);
notify_one(cl);
int timeout_h(conn_list_t *cl)
{
cp
+ if(!cl->status.active) return -1;
syslog(LOG_NOTICE, IP_ADDR_S " says it's gotten a timeout from us", IP_ADDR_V(cl->vpn_ip));
cl->status.termreq = 1;
terminate_connection(cl);
ip_t vpn_ip;
conn_list_t *fw;
cp
+ if(!cl->status.active) return -1;
+
if(sscanf(cl->buffer, "%*d %lx", &vpn_ip) != 1)
{
syslog(LOG_ERR, "got bad DEL_HOST request: %s", cl->buffer);
int ping_h(conn_list_t *cl)
{
cp
+ if(!cl->status.active) return -1;
if(debug_lvl > 3)
syslog(LOG_DEBUG, "responding to ping from " IP_ADDR_S, IP_ADDR_V(cl->vpn_ip));
cl->status.pinged = 0;
int pong_h(conn_list_t *cl)
{
cp
+ if(!cl->status.active) return -1;
if(debug_lvl > 3)
syslog(LOG_DEBUG, "ok, got pong from " IP_ADDR_S, IP_ADDR_V(cl->vpn_ip));
cl->status.got_pong = 1;
unsigned short port;
conn_list_t *ncn, *fw;
cp
+ if(!cl->status.active) return -1;
if(sscanf(cl->buffer, "%*d %lx %lx/%lx:%hx", &real_ip, &vpn_ip, &vpn_mask, &port) != 4)
{
syslog(LOG_ERR, "got bad ADD_HOST request: %s", cl->buffer);
ip_t from;
conn_list_t *fw;
cp
+ if(!cl->status.active) return -1;
if(sscanf(cl->buffer, "%*d %lx %lx", &to, &from) != 2)
{
syslog(LOG_ERR, "got bad request: %s", cl->buffer);
char *key;
conn_list_t *fw, *gk;
cp
+ if(!cl->status.active) return -1;
if(sscanf(cl->buffer, "%*d %lx %lx %d %as", &to, &from, &expiry, &key) != 4)
{
syslog(LOG_ERR, "got bad ANS_KEY request: %s", cl->buffer);
ip_t from;
conn_list_t *ik;
cp
+ if(!cl->status.active) return -1;
if(sscanf(cl->buffer, "%*d %lx", &from) != 1)
{
syslog(LOG_ERR, "got bad ANS_KEY request: %s", cl->buffer);